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  • Java Exercises - Basic to Advanced Java Practice Set with Solutions

1. Write Hello World Program in Java

2. write a program in java to add two numbers., 3. write a program to swap two numbers, 4. write a java program to convert integer numbers and binary numbers..

  • 5. Write a Program to Find Factorial of a Number in Java
  • 6. Write a Java Program to Add two Complex Numbers

7. Write a Program to Calculate Simple Interest in Java

  • 8. Write a Program to Print the Pascal’s Triangle in Java

9. Write a Program to Find Sum of Fibonacci Series Number

10. write a program to print pyramid number pattern in java., 11. write a java program to print pattern., 12. write a java program to print pattern., 13. java program to print patterns., 14. write a java program to compute the sum of array elements., 15. write a java program to find the largest element in array, 16. write java program to find the tranpose of matrix, 17. java array program for array rotation, 18. java array program to remove duplicate elements from an array, 19. java array program to remove all occurrences of an element in an array, 20. java program to check whether a string is a palindrome, 21. java string program to check anagram, 22. java string program to reverse a string, 23. java string program to remove leading zeros, 24. write a java program for linear search., 25. write a binary search program in java., 26. java program for bubble sort..

  • 27. Write a Program for Insertion Sort in Java

28. Java Program for Selection Sort.

29. java program for merge sort., 30. java program for quicksort., java exercises – basic to advanced java practice programs with solutions.

Java is one of the most popular languages because of its robust and secure nature. But, programmers often find it difficult to find a platform for Java Practice Online. In this article, we have provided Java Practice Programs. That covers various Java Core Topics that can help users with Java Practice.

Take a look at our Java Exercises to practice and develop your Java programming skills. Our Java programming exercises Practice Questions from all the major topics like loops, object-oriented programming, exception handling, and many more.

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Pattern Programs in Java

Array programs in java, string programs in java, java practice problems for searching algorithms, practice problems in java sorting algorithms.

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Java Practice Programs

The solution to the Problem is mentioned below:

Click Here for the Solution

5. write a program to find factorial of a number in java., 6. write a java program to add two complex numbers., 8. write a program to print the pascal’s triangle in java.

Pattern_In_Java

Time Complexity: O(N) Space Complexity: O(N)
Time Complexity: O(logN) Space Complexity: O(N)

Sorting_in_java

Time Complexity: O(N 2 ) Space Complexity: O(1)

27. Write a Program for Insertion Sort in Java.

Time Complexity: O(N logN) Space Complexity: O(N)
Time Complexity: O(N logN) Space Complexity: O(1)

After completing these Java exercises you are a step closer to becoming an advanced Java programmer. We hope these exercises have helped you understand Java better and you can solve beginner to advanced-level questions on Java programming.

Solving these Java programming exercise questions will not only help you master theory concepts but also grasp their practical applications, which is very useful in job interviews.

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FAQ in Java Exercise

1. how to do java projects for beginners.

To do Java projects you need to know the fundamentals of Java programming. Then you need to select the desired Java project you want to work on. Plan and execute the code to finish the project. Some beginner-level Java projects include: Reversing a String Number Guessing Game Creating a Calculator Simple Banking Application Basic Android Application

2. Is Java easy for beginners?

As a programming language, Java is considered moderately easy to learn. It is unique from other languages due to its lengthy syntax. As a beginner, you can learn beginner to advanced Java in 6 to 18 months.

3. Why Java is used?

Java provides many advantages and uses, some of which are: Platform-independent Robust and secure Object-oriented Popular & in-demand Vast ecosystem

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45 Java Programming Exercises With Solutions

If you have learned the basics of Java , it is the right time to solve some practice problems. Practicing and solving problems will help you master the Java programming language and take your skills to the next level.

In this post, I have put together some Java coding problems that you can use for practice. I have also provided the Java code solutions and the corresponding output for your reference.

Try to solve these problems by yourself and get better at Java. Let’s dive right in.

Java Programming Exercises With Solutions

1. Java program to check whether the given number is even or odd

2. java program to convert the temperature in centigrade to fahrenheit, 3. java program to find the area of a triangle whose three sides are given, 4. java program to find out the average of a set of integers, 5. java program to find the product of a set of real numbers, 6. java program to find the circumference and area of a circle with a given radius, 7. java program to check whether the given integer is a multiple of 5, 8. java program to check whether the given integer is a multiple of both 5 and 7, 9. java program to find the average of 5 numbers using a while loop, 10. java program to display the given integer in the reverse order, 11. java program to find the geometric mean of n numbers, 12. java program to find the sum of the digits of an integer using a while loop, 13. java program to display all the multiples of 3 within the range 10 to 50, 14. java program to display all integers within the range 100-150 whose sum of digits is an even number, 15. java program to check whether the given integer is a prime number or not, 16. java program to generate the prime numbers from 1 to n, 17. java program to find the roots of a quadratic equation, 18. java program to print the numbers from a given number n till 0 using recursion, 19. java program to find the factorial of a number using recursion, 20. java program to display the sum of n numbers using an array, 21. java program to implement linear search, 22. java program to implement binary search, 23. java program to find the number of odd numbers in an array, 24. java program to find the largest number in an array without using built-in functions, 25. java program to insert a number to any position in an array, 26. java program to delete an element from an array by index, 27. java program to check whether a string is a palindrome or not, 28. java program to implement matrix addition, 29. java program to implement matrix multiplication, 30. java program to check leap year, 31. java program to find the nth term in a fibonacci series using recursion, 32. java program to print fibonacci series using iteration, 33. java program to implement a calculator to do basic operations, 34. java program to find your weight on mars.

Mars’ gravity is about 38% of Earth’s. Write a program that will calculate your weight on Mars.

  • Declare all variables at the top of the class.
  • Initial variables are to be of float type.
  • After making the calculations, assign the result to a new variable, this time of the double type.
  • After assigning the assignment, write the variable double to the console, limiting its length to 4 decimal places.
  • Cast the above variable of double type to a new variable of int type.
  • Cast the above variable of type int to a new variable of type char.
  • Do any math operation on this variable char type and assign the value of this activity to the new variable int type.
  • Each of the above actions should be written to the console, adding some text explaining what has been done.

35. Java Program to Check Whether the Generated Random Number Is Even or Odd

Write a program that generates a random number between 1 and 100 (you can use the Random () method from the Math class.

In the next step check whether it is an even or an odd number. Each of the above actions should be written to the console.

36. Java Program to Find the Number of Containers You Need

Choose an odd number between 50 and 100 and save it as an int variable telling us how many Lego bricks we have (e.g. amountOfBricks ), then select an even number between 5 and 10 stating how many Lego blocks fit in one container (e.g.: containerCapacity ) and save it as an int variable as well.

Write a program that will calculate how many full containers we have, how many containers, in general, are full and not full, and how many blocks are in the container that is not completely full (use the modulo operator for this).

37. Java Program to Calculate Taxes

Using the double types, implement the following: Suppose a product costs 9.99 net, calculate its gross value (we assume VAT of 23%). Then multiply it by 10,000 (i.e., we sold 10,000 pcs of this product), and calculate this value excluding VAT.

Implement the above actions using the Big Decimal class. Print on the console all computed values and compare their values. What conclusions do you have?

38. Calculate BMI Using Java

The user enters his height (in inches) and weight (in pounds). The variables passed by the user are assigned to the float type. After calculating the BMI value, the value will be assigned to the appropriate range and the correct message will appear on the console. You can use the if-else-if ladder for printing the message on the console.

Intervals of BMI index:

  • 16.00 or less = starvation
  • 16.00-16.99 = emaciation
  • 17.00-18.49 = underweight
  • 18.50-22.99 = normal, low range
  • 23.00-24.99 = normal high range
  • 25.00-27.49 = overweight low range
  • 27.50-29.99 = overweight high range
  • 30.00-34.99 = 1st degree obesity
  • 35.00-39.99 = 2nd degree obesity
  • 40.00 or above = 3rd degree obesity

39. Java Program to Find the Sum of Even Numbers

Write a program that sums even numbers from 1 to 100 using for loop.

40. Java Program to Find the Largest and Smallest Numbers From Random Numbers

Write a program that will use the while loop to find the largest and smallest number from the set of 10 randomly drawn integers from 1 to 100. In this task, do not use arrays or other collections.

41. Java Program to Calculate the Area of a Rectangle

Write a program that follows the rules of object-oriented programming and will calculate the area of the rectangle.

You need to create two classes, one RectangleArea for the logic of your program and the Main class. In the Main class, we create the RectangleArea object and call three methods on it.

The methods you should create are:

  • getData(), gets side lengths from the
  • computeField(), performs
  • fieldDisplay(), displays info and result.

42. Returning Information About an Object in Java

Declare the class Car and define the following fields of this class (with the access modifier private): model, brand, year, price, color, and quantity.

Create a constructor of this class consisting of the previously mentioned fields. Create methods to return each of the fields and methods to set values for each of the fields. Additionally, create the sell() method (simulating car sales) which will change the value of the quantity field when called.

The last method to create is the toString() method that returns an object of type String and prints the names of all fields of a given object and values.

Create another class with the main() method in it. Create an object of the Car class by using the constructor. Call the toString() method and print the details.

Call the sell() method. Print all fields (using the previously declared getter methods of the object field).

Using the setter methods, change some fields of the object. Call the toString() method and print the details to notice the changes.

43. Filling an Array Using For Loops in Java

Write a program that creates a 10-element array and puts the numbers from 9 to 0 in it.

Use the classic for loop to fill the array, and in the condition, use the  array.length  method. Use for-each loop as a second loop to display the value of the array.

44. Java Program to Find the Largest and Smallest Numbers From an Array of Random Numbers

Write a program that will create a one-dimensional array with 10 elements that are chosen randomly from 1 to 100. Then use a loop to find the smallest and largest element in the array.

45. Two-dimensional Array in Java

Write a program that creates a two-dimensional array with dimensions of 10×10 and named matrix. On the diagonal of this matrix, put the numbers from 0 to 9 and the number 0 everywhere else. Additionally, the program should calculate the sum of the elements on the diagonal.

I'm the face behind Pythonista Planet. I learned my first programming language back in 2015. Ever since then, I've been learning programming and immersing myself in technology. On this site, I share everything that I've learned about computer programming.

6 thoughts on “ 45 Java Programming Exercises With Solutions ”

What a wonderful template! I found what I needed and more, Keep It Up Legend <3

* *2 *2* *2*4 *2*4*

Drawn above pattern in java ?

Your Centigrade converter doesn’t work. You need 9f instead of 9, or rounding will give you the wrong answer.

Thank you for pointing out the mistake. I have corrected the code.

It is to most and very workfull 🤩🤩

You have done it well, sir

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Java Programming Exercises

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I created this website to help developers improve their programming skills by practising simple coding exercises. The target audience is Software Engineers, Test Automation Engineers, or anyone curious about computer programming. The primary programming language is Java, as it is mature and easy to learn, but you can practice the same problems in any other language (Kotlin, Python, Javascript, etc.).

  • Binary Tree problems are common at Google, Amazon and Facebook coding interviews.
  • Sharpen your lambda and streams skills with Java 8 coding practice problems .
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In Java programming, commands are essential instructions that tell the computer what to do. These commands are written in a specific way so the computer can understand and execute them. Every program in Java is a set of commands. At the beginning of your Java programming practice , it’s good to know a few basic principles:

  • In Java, each command ends with a semicolon;
  • A command can't exist on its own: it’s a part of a method, and method is part of a class;
  • Method (procedure, function) is a sequence of commands. Methods define the behavior of an object.

Here is an example of the command:

The command System.out.println("Hello, World!"); tells the computer to display the text inside the quotation marks.

If you want to display a number and not text, then you do not need to put quotation marks. You can simply write the number. Or an arithmetic operation. For example:

Command to display the number 1.

A command in which two numbers are summed and their sum (10) is displayed.

As we discussed in the basic rules, a command cannot exist on its own in Java. It must be within a method, and a method must be within a class. Here is the simplest program that prints the string "Hello, World!".

We have a class called HelloWorld , a method called main() , and the command System.out.println("Hello, World!") . You may not understand everything in the code yet, but that's okay! You'll learn more about it later. The good news is that you can already write your first program with the knowledge you've gained.

Attention! You can add comments in your code. Comments in Java are lines of code that are ignored by the compiler, but you can mark with them your code to make it clear for you and other programmers.

Single-line comments start with two forward slashes (//) and end at the end of the line. In example above we have a comment //here we print the text out

You can read the theory on this topic here , here , and here . But try practicing first!

Explore the Java coding exercises for practicing with commands below. First, read the conditions, scroll down to the Solution box, and type your solution. Then, click Verify (above the Conditions box) to check the correctness of your program.

java homework solutions

The two main types in Java are String and int. We store strings/text in String, and integers (whole numbers) in int. We have already used strings and integers in previous examples without explicit declaration, by specifying them directly in the System.out.println() operator.

In the first case “I am a string” is a String in the second case 5 is an integer of type int. However, most often, in order to manipulate data, variables must be declared before being used in the program. To do this, you need to specify the type of the variable and its name. You can also set a variable to a specific value, or you can do this later. Example:

Here we declared a variable called a but didn't give it any value, declared a variable b and gave it the value 5 , declared a string called s and gave it the value Hello, World!

Attention! In Java, the = sign is not an equals sign, but an assignment operator. That is, the variable (you can imagine it as an empty box) is assigned the value that is on the right (you can imagine that this value was put in the empty box).

We created an integer variable named a with the first command and assigned it the value 5 with the second command.

Before moving on to practice, let's look at an example program where we will declare variables and assign values to them:

In the program, we first declared an int variable named a but did not immediately assign it a value. Then we declared an int variable named b and "put" the value 5 in it. Then we declared a string named s and assigned it the value "Hello, World!" After that, we assigned the value 2 to the variable a that we declared earlier, and then we printed the variable a, the sum of the variables a and b, and the variable s to the screen

This program will display the following:

We already know how to print to the console, but how do we read from it? For this, we use the Scanner class. To use Scanner, we first need to create an instance of the class. We can do this with the following code:

Once we have created an instance of Scanner, we can use the next() method to read input from the console or nextInt() if we should read an integer.

The following code reads a number from the console and prints it to the console:

Here we first import a library scanner, then ask a user to enter a number. Later we created a scanner to read the user's input and print the input out.

This code will print the following output in case of user’s input is 5:

More information about the topic you could read here , here , and here .

See the exercises on Types and keyboard input to practice Java coding:

Conditions and If statements in Java allow your program to make decisions. For example, you can use them to check if a user has entered a valid password, or to determine whether a number is even or odd. For this purpose, there’s an 'if/else statement' in Java.

The syntax for an if statement is as follows:

Here could be one or more conditions in if and zero or one condition in else.

Here's a simple example:

In this example, we check if the variable "age" is greater than or equal to 18. If it is, we print "You are an adult." If not, we print "You are a minor."

Here are some Java practice exercises to understand Conditions and If statements:

In Java, a "boolean" is a data type that can have one of two values: true or false. Here's a simple example:

The output of this program is here:

In addition to representing true or false values, booleans in Java can be combined using logical operators. Here, we introduce the logical AND (&&) and logical OR (||) operators.

  • && (AND) returns true if both operands are true. In our example, isBothFunAndEasy is true because Java is fun (isJavaFun is true) and coding is not easy (isCodingEasy is false).
  • || (OR) returns true if at least one operand is true. In our example, isEitherFunOrEasy is true because Java is fun (isJavaFun is true), even though coding is not easy (isCodingEasy is false).
  • The NOT operator (!) is unary, meaning it operates on a single boolean value. It negates the value, so !isCodingEasy is true because it reverses the false value of isCodingEasy.

So the output of this program is:

More information about the topic you could read here , and here .

Here are some Java exercises to practice booleans:

With loops, you can execute any command or a block of commands multiple times. The construction of the while loop is:

Loops are essential in programming to execute a block of code repeatedly. Java provides two commonly used loops: while and for.

1. while Loop: The while loop continues executing a block of code as long as a specified condition is true. Firstly, the condition is checked. While it’s true, the body of the loop (commands) is executed. If the condition is always true, the loop will repeat infinitely, and if the condition is false, the commands in a loop will never be executed.

In this example, the code inside the while loop will run repeatedly as long as count is less than or equal to 5.

2. for Loop: The for loop is used for iterating a specific number of times.

In this for loop, we initialize i to 1, specify the condition i <= 5, and increment i by 1 in each iteration. It will print "Count: 1" to "Count: 5."

Here are some Java coding challenges to practice the loops:

An array in Java is a data structure that allows you to store multiple values of the same type under a single variable name. It acts as a container for elements that can be accessed using an index.

What you should know about arrays in Java:

  • Indexing: Elements in an array are indexed, starting from 0. You can access elements by specifying their index in square brackets after the array name, like myArray[0] to access the first element.
  • Initialization: To use an array, you must declare and initialize it. You specify the array's type and its length. For example, to create an integer array that can hold five values: int[] myArray = new int[5];
  • Populating: After initialization, you can populate the array by assigning values to its elements. All elements should be of the same data type. For instance, myArray[0] = 10; myArray[1] = 20;.
  • Default Values: Arrays are initialized with default values. For objects, this is null, and for primitive types (int, double, boolean, etc.), it's typically 0, 0.0, or false.

In this example, we create an integer array, assign values to its elements, and access an element using indexing.

In Java, methods are like mini-programs within your main program. They are used to perform specific tasks, making your code more organized and manageable. Methods take a set of instructions and encapsulate them under a single name for easy reuse. Here's how you declare a method:

  • public is an access modifier that defines who can use the method. In this case, public means the method can be accessed from anywhere in your program.Read more about modifiers here .
  • static means the method belongs to the class itself, rather than an instance of the class. It's used for the main method, allowing it to run without creating an object.
  • void indicates that the method doesn't return any value. If it did, you would replace void with the data type of the returned value.

In this example, we have a main method (the entry point of the program) and a customMethod that we've defined. The main method calls customMethod, which prints a message. This illustrates how methods help organize and reuse code in Java, making it more efficient and readable.

In this example, we have a main method that calls the add method with two numbers (5 and 3). The add method calculates the sum and returns it. The result is then printed in the main method.

All composite types in Java consist of simpler ones, up until we end up with primitive types. An example of a primitive type is int, while String is a composite type that stores its data as a table of characters (primitive type char). Here are some examples of primitive types in Java:

  • int: Used for storing whole numbers (integers). Example: int age = 25;
  • double: Used for storing numbers with a decimal point. Example: double price = 19.99;
  • char: Used for storing single characters. Example: char grade = 'A';
  • boolean: Used for storing true or false values. Example: boolean isJavaFun = true;
  • String: Used for storing text (a sequence of characters). Example: String greeting = "Hello, World!";

Simple types are grouped into composite types, that are called classes. Example:

We declared a composite type Person and stored the data in a String (name) and int variable for an age of a person. Since composite types include many primitive types, they take up more memory than variables of the primitive types.

See the exercises for a coding practice in Java data types:

String is the most popular class in Java programs. Its objects are stored in a memory in a special way. The structure of this class is rather simple: there’s a character array (char array) inside, that stores all the characters of the string.

String class also has many helper classes to simplify working with strings in Java, and a lot of methods. Here’s what you can do while working with strings: compare them, search for substrings, and create new substrings.

Example of comparing strings using the equals() method.

Also you can check if a string contains a substring using the contains() method.

You can create a new substring from an existing string using the substring() method.

More information about the topic you could read here , here , here , here , and here .

Here are some Java programming exercises to practice the strings:

In Java, objects are instances of classes that you can create to represent and work with real-world entities or concepts. Here's how you can create objects:

First, you need to define a class that describes the properties and behaviors of your object. You can then create an object of that class using the new keyword like this:

It invokes the constructor of a class.If the constructor takes arguments, you can pass them within the parentheses. For example, to create an object of class Person with the name "Jane" and age 25, you would write:

Suppose you want to create a simple Person class with a name property and a sayHello method. Here's how you do it:

In this example, we defined a Person class with a name property and a sayHello method. We then created two Person objects (person1 and person2) and used them to represent individuals with different names.

Here are some coding challenges in Java object creation:

Static classes and methods in Java are used to create members that belong to the class itself, rather than to instances of the class. They can be accessed without creating an object of the class.

Static methods and classes are useful when you want to define utility methods or encapsulate related classes within a larger class without requiring an instance of the outer class. They are often used in various Java libraries and frameworks for organizing and providing utility functions.

You declare them with the static modifier.

Static Methods

A static method is a method that belongs to the class rather than any specific instance. You can call a static method using the class name, without creating an object of that class.

In this example, the add method is static. You can directly call it using Calculator.add(5, 3)

Static Classes

In Java, you can also have static nested classes, which are classes defined within another class and marked as static. These static nested classes can be accessed using the outer class's name.

In this example, Student is a static nested class within the School class. You can access it using School.Student.

More information about the topic you could read here , here , here , and here .

See below the exercises on Static classes and methods in our Java coding practice for beginners:

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Java Solved Programs, Problems with Solutions – Java programming

Java solved programs problems with solutions.

Java Solved programs —->  Java is a powerful general-purpose programming language. It is fast, portable and available in all platforms.

This page contains the Java solved programs/examples with solutions, here we are providing most important programs on each topic . These Java examples cover a wide range of programming areas in Computer Science.

Every example program includes the description of the program, Java code as well as output of the program. All examples are compiled and tested on a Windows system.

These examples can be as simple and basic as “Hello World” program to extremely tough and advanced Java programs. Here is the List of Java solved programs/examples with solutions (category wise) and detailed explanation.

Java Solved Programs by categories…….

Java basic solved programs.

  • Java Program to Print Hello World on Screen
  • Java program to Swap two numbers using third variable
  • Java Program to find Addition of two numbers by input value from keyboard
  • Java Program to Swap two numbers without using third variable
  • Java Program Swap Two Numbers using function
  • Java Program to Check entered input is Prime Number or Not
  • Java Program to Check input number is Even or Odd
  • Java Program to find Factorial using While loop
  • Java Program to find Reverse Number using While Loop
  • Java Program to display Fibonacci Series using While Loop
  • Java Program to find GCD (HCF) of Two Numbers
  • Java Program to Check whether Given Number is Armstrong or Not
  • Java Program to find Largest among three Numbers
  • Java Program to find given number is Palindrome or Not
  • Java Program to Find Sum of Digits of given Number
  • Java Program to display n Prime Numbers using Exception Handling
  • Java Program to print Armstrong numbers between desired Range
  • Java Program to Print Floyd’s Triangle using For Loop
  • Java Program to Print Pascal Triangle using Recursion
  • Java Program to Perform Mathematical Operations
  • Java Program to Make a Simple Calculator using switch case
  • Java Program to Calculate Arithmetic Mean of N numbers
  • Java program to convert Fahrenheit to Celsius
  • Java Program to Convert Celsius to Fahrenheit
  • Java Menu Driven Program for If, Switch, While, Do-While and For Loop
  • Java program to multiply N numbers without using * operator

Java Number Solved Programs

  • Java Program to Print Pascal Triangle using For Loop
  • Java program to generate random numbers using Random()
  • Java Program to Find GCD(HCF) and LCM of Two Numbers
  • Java program to find Reverse of a number
  • Java program to find roots of quadratic equation in all cases

Java String Solved Programs

  • Java Program to Print Simple String entered by user
  • Java Program to Find Length of String using length() method
  • Java Program to Compare Two Strings using compareTo() Function
  • Java program to find and display all substrings in string
  • Java Program to reverse any String
  • Java Program to Copy String into Another String
  • Java Program to Append(Concatenate) one string to another string
  • Java Program to Swap Strings using temp variable
  • Java Program to Swap two strings without using temp variable
  • Java Program to Delete or Remove Vowels from string (Manual Method)
  • Java Program to Sort n Strings in Alphabetical Order
  • Java Program to Remove or Delete Vowels from String using Function
  • Java Program to Remove or Delete Words from String using Function
  • Java Program to Delete or Remove Words from String without Function
  • Java Program to Check whether string is palindrome or not using Function
  • Java Program to Check String is palindrome or not using String Buffer
  • Java Program to Check String is Palindrome or not using Recursion
  • Java Program to find Lexicographically smallest and largest substring of length k
  • Java Program to Count frequency or occurrence of all characters in string
  • Java Program to Count frequency of each characters using Buffered Reader
  • Java Program to Count Frequency of Character in String ( 4 Methods )
  • Java Program to Count Frequency or Occurrance of each Word in String

Java Arrays Solved Programs

  • Java Program for Binary Search on Unsorted Array
  • Java Program to input and print n elements in an array
  • Java Program for Addition of Two Matrices
  • Java Program for Subtraction of Two Matrices
  • Java Program to find Transpose Matrix
  • Java Program for Multiplication of Two Matrices
  • Java Program for Linear Search on unsorted array
  • Java Program to Perform Bubble Sort
  • Java Program to perform Selection Sort using static function
  • Java Program to perform Insertion Sort using function
  • Java Program to perform Quick Sort using Static Function

If you found any error or any queries related to the above programs or any questions or reviews , you wanna to ask from us ,you may Contact Us through our contact Page or you can also comment below in the comment section.We will try our best to reach up to you in short interval.

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please solve the qustion

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Create a menu-based java program for the following queues operations using  linked list :

  • Display/Print

Create a menu-based java program for the following queues operations using array:

nadia

Design a flowchart of the java program that accepts 3 integer values and display the lowest and the highest given value.

macc

hello i need help

Divya

Write a program to input two arrays of size ‘m’ each. Find the sum of the elements of the two arrays in the same index and store it in the 3rd array in reverse order.

tera baap hu mai

wtf………….

Ramesh

Create the class such that it reset the value of the object it is used to null its after uses in all cases using in finally statement in java exception handling

eeee

Enter a four-digit number. Break it down into numbers. Compose a new number in which from the original number all even digits less than 8 are increased by 2, and 8 is replaced by 0(java program)

Zeroo

Write a program that reads in from the user a character (ch), an integer (n) and another character (operator). This operator is an indication of the operation applied to (ch) and (n) entered as follows: – When (operator) character entered is ‘p’ or ‘P’, your program displays the character that comes after (ch) entered in (n) positions. – When (operator) character entered is ‘s’ or ‘S’, your program displays the character that precedes (ch) entered with (n) positions. – When (operator) character entered is ‘m’ or ‘M’, your program displays the character resulting of the multiplication of the value of …  Read more »

anyone know how to solve that question

Lila

implement a multithreaded UDP server and client in java using JDK open source library 1 Client will send a number to server on tcp packet(continuous stream) 2.Server will acknowledge the request with sending back the same number(echo) 3.Client will maintain a data structure which stores un acknowledged numbers from server

Arman

class A { int a; String b; boolean c; A()//default {   a=100; b=”pawan”; c=true; } void Disp() {   System.out.print(a+” “+b+” “+c); } } class B {  public static void main(String []arga){ A r=new A(); r.Disp(); } }

Tasneem

public class TicketCost ( public static void main(String[] args) ( I Declare variables int age; double cost; String msge;

Java Programming

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Over the past two decades, Java has grown to become one of the most widely used programming languages in the industry, as it is taught in colleges and universities around the globe. If you are studying computer science, you will need to become proficient in java programming through a college course. This programming language will likely serve as a fundamental tool you will employ in future classes, making it essential that you have a full understanding of how to use it.

Even simple Java homework assignments can provide the extra practice needed to help you gain a more thorough understanding of the language, so it's crucial you get help with your Java programming class when you have questions or feel uncertain about how to approach an assignment. 

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We strive to give all students access to our highly qualified tutors to help promote success in demanding courses in college. Our online Java tutors include individuals with advanced degrees in their fields, such as software developers and Java designers themselves. With their experienced and credentialed background, they can provide the Java assignment help you need in current and future college programming courses.

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Our services are useful for all college students taking Java programming classes. Whether you're just starting to learn Java programming or you want to become more proficient in an advanced course, our professional Java tutors can offer the services you need to achieve your educational goals.

With your personal dedication to your education and our team's Java programming background, you'll have all the tools you need to get the most out of your programming class. You can feel free to ask our tutors questions, submit your assignments for extra Java homework help or simply learn more about the program itself. 

At 24HourAnswers, our goal is to help you succeed inside the classroom, and we'll help you every step of the way. Schedule your first session with one of our tutors today or submit your Java assignments for homework help.

Java Programming Software

Java is developed using the Oracle Java Development Kit (JDK). The most popular version of the JDK which is typically used for application development and in coursework is Java Standard Edition (SE) version 8. To get started developing Java using the JDK, download JDK 8 here , selecting the version corresponding to your operating system.

After downloading the Java Development Kit (JDK), an integrated development environment (IDE) is used to write code in the Java programming language. There are a number of popular tools which are commonly used for Java software development.

Popular Java IDEs:

  • Eclipse: https://www.eclipse.org/downloads/
  • NetBeans: https://netbeans.org/
  • IntelliJ IDEA: https://www.jetbrains.com/idea/
  • BlueJ: https://www.bluej.org/
  • DrJava: http://www.drjava.org/
  • JCreator: http://www.jcreator.com/
  • jGRASP: https://www.jgrasp.org/

Among the options for development environments, Eclipse is the program of choice which is most commonly used for Java program development. Eclipse is an open-source IDE which supports the creation of Java workspaces for more complex Java development projects, and it supports the development and use of plug-ins which extend the core functionality of the program. Download Eclipse now to begin writing programs in Java.

Java source code is organized in classes, in which each class either contains code which can be executed, or contains the definition of a class, which can be referenced and instantiated by another class in the program. Within a program, these classes belong to packages where each package is a grouping of classes that contain a common set of roles, functions, and objectives. Part of becoming a great software developer involves thinking about how best to organize your code. Plan a program out in advance using pseudocode or a skeleton of the overall project. This will help you identify what packages and classes will be needed in the overall program, as well as guiding you to consider how the different parts of the program will depend on and affect each other.

Now that you have the Java Development Kit, the Eclipse integrated development environment, and a program in mind, you have all the tools needed to dive into Java programming. Whether your program is an introductory level Java assignment or a more complicated graduate-level algorithms project, our Java online tutors are ready to assist with your Java programming assignment to help you design and create great software.

Our Java online tutors are available anytime to offer Java programming assignment help or guide your understanding and mastery of your Java programming coursework. For any Java programming challenge—big or small—bring us the question, and we have the answers! 

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About Java Programming

The Java programming language was developed by Sun Microsystems and first released in the year 1995. It is a powerful, high-level, general-purpose programming language. Java is based on the principle of write once, run anywhere and hence is a platform-independent, architecture-neutral, portable, and robust programming language.

It is the second most popular language among developers with over 12 million developers running Java. It runs on more than 3 billion devices worldwide including the Android operating system. It has grown from humble origins to power a significant portion of today's digital world by offering a secure platform on which many software applications are built. Java is still used in new, innovative goods and digital services that are being developed for the future. Many apps, including some websites, will not work unless you have Java installed.

Importance of Java

Java is a general-purpose programming language. It is used on mobile phones, desktop computers, and large-scale industry servers and applications because of its stability and scalability. It has recently gained popularity in the Internet of Things (IoT) and cloud development fields. There are around 10 million Java developers worldwide, and this number is growing on a daily basis. Java, like other open source technologies, promotes the idea of giving back to the community.

Java is more common than you might assume in your daily lives. Google, YouTube, LinkedIn, Amazon, and eBay are just a few examples of popular websites that employ it. It also has a solid development path, with security and performance improvements being made on a regular basis.

Why is java so Popular ?

Platform independence is one of the main reasons for Java's popularity. Java programmes can operate on a variety of computers as long as they have the Java Runtime Environment (JRE) installed. Another reason for java’s popularity can be that the code you wrote 15 years ago will execute on the most recent JVMs, benefiting from the latest profiling, native code translation, and memory management. In addition, Java is an object-oriented programming language Object-oriented programming is at the core of Java. Because Java objects don't refer to data outside of themselves, the code is extremely robust. Lastly, even though the language is considered basic, it comes with a library of classes that provide often used utility functions that most java projects require.

Is Java Worth Learning ?

Java is still a useful programming language that shows no signs of fading in popularity, making it worthwhile to learn. As it is very simple to learn, most developers use it as their first programming language. Java has an English-like grammar with few special characters, therefore, it can be learnt quickly and utilised to create useful applications. Because Java is part of a family of languages that are significantly impacted by C++ (as well as C#), knowing Java can help you learn these other two languages more quickly. Some examples of areas where java is used are Android applications, web applications, software tools, and scientific applications.

According to Indeed , an Entry-Level Java Developer can start with an annual salary of around $66,000 per year in the US.

Which Java Concepts are Most Difficult?

The following are some subtopics with which students usually face problems, and our Java programming professionals can help you with them:

  • Object-Oriented Programming (OOP): Imagine Java as a language that revolves around creating and manipulating objects. These objects are like building blocks that interact with each other. Understanding how to design and work with these objects, inheritance (where one class can inherit attributes and methods from another), polymorphism (the ability to use different objects interchangeably), and encapsulation (keeping the inner workings of an object hidden) can be a bit like learning a new way of thinking.
  • Generics : Think of generics as a way to create flexible and reusable code. However, they can be a bit like solving a puzzle. You need to figure out how to write code that can work with different types without knowing the exact type beforehand. This involves understanding concepts like wildcard types, type bounds, and type erasure.
  • Concurrency and Multithreading: Picture a scenario where you have multiple tasks running simultaneously, like a juggler juggling multiple balls at once. Java provides tools for managing these simultaneous tasks, but it can be challenging to ensure they don't collide and cause issues. This involves concepts like synchronization and making sure your code is thread-safe.
  • Exception Handling: Imagine you're programming and something unexpected goes wrong, like your program trying to divide by zero. Exception handling is like setting up a safety net to catch these unexpected errors and deal with them gracefully. It involves handling different types of errors and deciding what to do when they occur.
  • Lambdas and Functional Programming: Java introduced a more modern way of programming called functional programming. It's a bit like learning a new style of writing. Lambdas allow you to write code more concisely and in a functional style, which can be different from the traditional procedural style of programming.
  • Classpath and Package Management: Think of Java code as a library with many books (classes and packages). You need to organize these books in the right order and make sure you can find them when you need them. This can involve configuring the classpath and understanding how packages and modules work.
  • Garbage Collection: Java helps you manage memory automatically, a bit like a magic cleanup crew. However, understanding how it works under the hood and optimizing it for performance can be challenging.
  • Design Patterns: Think of design patterns as proven blueprints for solving common problems. Learning them is like understanding architectural plans for building different types of houses. These patterns help you write maintainable and scalable code but can take time to grasp fully.
  • I/O Operations: Working with input and output in Java is like connecting pipes to move data around. You need to know how to read and write data from files, streams, and other sources efficiently.
  • Java Virtual Machine (JVM): The JVM is like the engine that runs your Java code. Understanding how it manages memory, executes bytecode, and optimizing its performance is a bit like learning about the inner workings of a car engine.

What is Java Homework help or Assignment Help?

In java homework help, we assist students online via chat or live session in solving their homework or assignment and provide instant solutions. Many students fear to get low grades in their assignments due to lack of time or proper knowledge. Moreover, when there are multiple assignments and deadlines, it will be quite difficult to submit them on-time. FavTutor extends valuable help with your homework so that you can stay calm. Our programmers provide the best java assignment help of any length and deliver your assignment on the promised date, so that you also have some time to check it before submitting.

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Our java programmers will help you understand complex concepts easily before test/exam or to learn java programming. Being a technical language that it is, Java programming can be quite difficult for students to study on their own. We provide on-demand courses and lessons so that you can improve your weaker topics, and don’t have to study everything from scratch. Moreover, there is no time restriction- our professional java experts are online 24*7 for your support and learning. We intend to simplify their learning, clear their doubts easily so that they secure better grades in exams.

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Stuck in a particular Java problem? Well, try our java programming help chat now. We have expert Java programming experts who can provide instant solutions to your queries. Drop-in a hello in the chat section below and share your query, our experts will provide instant solutions so that your learning doesn’t stop.

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In 1993 "Elektrostal" was transformed into an open joint stock company. The factory occupies a leading position among the manufacturers of high quality steel. The plant is a producer of high-temperature nickel alloys in a wide variety. It has a unique set of metallurgical equipment: open induction and arc furnaces, furnace steel processing unit, vacuum induction, vacuum- arc furnaces and others. The factory has implemented and certified quality management system ISO 9000, received international certificates for all products. Elektrostal today is a major supplier in Russia starting blanks for the production of blades, discs and rolls for gas turbine engines. Among them are companies in the aerospace industry, defense plants, and energy complex, automotive, mechanical engineering and instrument-making plants.

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  1. Java programming Exercises, Practice, Solution

    Here you have the opportunity to practice the Java programming language concepts by solving the exercises starting from basic to more complex exercises. A sample solution is provided for each exercise. It is recommended to do these exercises by yourself first before checking the solution. Hope, these exercises help you to improve your Java ...

  2. Java Exercises

    That covers various Java Core Topics that can help users with Java Practice. Take a look at our Java Exercises to practice and develop your Java programming skills. Our Java programming exercises Practice Questions from all the major topics like loops, object-oriented programming, exception handling, and many more.

  3. 45 Java Programming Exercises With Solutions

    45. Two-dimensional Array in Java. Write a program that creates a two-dimensional array with dimensions of 10×10 and named matrix. On the diagonal of this matrix, put the numbers from 0 to 9 and the number 0 everywhere else. Additionally, the program should calculate the sum of the elements on the diagonal.

  4. Java Programming Exercises with Solutions

    Highlights. Binary Tree problems are common at Google, Amazon and Facebook coding interviews.; Sharpen your lambda and streams skills with Java 8 coding practice problems.; Check our Berlin Clock solution, a commonly used code exercise.; We have videos too! Check out the FizzBuzz solution, a problem widely used on phone screenings.

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    First, read the conditions, scroll down to the Solution box, and type your solution. Then, click Verify (above the Conditions box) to check the correctness of your program. Exercise 1 Exercise 2 Exercise 3. Start task. We have 300 tasks on Java Syntax topics and over 1200 tasks on Core Java topics in the CodeGym course.

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