Java Programs Examples with Output

I can provide you with a few Java program examples along with their outputs. Please note that you can run these examples in any Java development environment, such as Eclipse, IntelliJ IDEA, or even through the command line using javac and java commands.

Example 1: Hello World

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public class HelloWorld { public static void main(String[] args) { System.out.println(“Hello, World!”); } }

Output:

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Hello, World!

Example 2: Adding Two Numbers

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import java.util.Scanner; public class AddTwoNumbers { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); System.out.print(“Enter the first number: “); int num1 = scanner.nextInt(); System.out.print(“Enter the second number: “); int num2 = scanner.nextInt(); int sum = num1 + num2; System.out.println(“Sum: ” + sum); scanner.close(); } }

Output:

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Enter the first number: 5 Enter the second number: 7 Sum: 12 

Example 3: Factorial Calculation

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import java.util.Scanner; public class Factorial { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); System.out.print(“Enter a number: “); int n = scanner.nextInt(); int factorial = 1; for (int i = 1; i <= n; i++) { factorial *= i; } System.out.println(“Factorial of ” + n + ” is: ” + factorial); scanner.close(); } }

Output:

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Enter a number: 5 Factorial of 5 is: 120 

Example 4: Check if a Number is Prime

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import java.util.Scanner; public class PrimeCheck { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); System.out.print(“Enter a number: “); int num = scanner.nextInt(); boolean isPrime = true; if (num <= 1) { isPrime = false; } else { for (int i = 2; i <= num / 2; i++) { if (num % i == 0) { isPrime = false; break; } } } if (isPrime) { System.out.println(num + ” is a prime number.”); } else { System.out.println(num + ” is not a prime number.”); } scanner.close(); } }

Output:

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Enter a number: 17 17 is a prime number.

These are just a few basic examples to get you started with Java programming. You can run these examples to see the outputs and experiment with them to learn more about Java programming concepts.