Java - Demonstrate Example of System.exit() Method using Java program.

In this program (code snippet) we will learn how to exit/ terminate on any situation condition from current java program?

System.exit() is a method which is used to terminate java program, while using this method we can pass either 0 r -1; 0 represents successful termination while -1 represents unsuccessful termination.

In this program, we are reading and printing integer values until -1 is not entered. When user input will be -1 program will be terminated, otherwise program will print entered number.

Java Code Snippet - Example of System.exit() in Java

//Java - Demonstrate Example of System.exit() Method using Java program.

import java.util.Scanner;
 
class JavaExitExample
{
	public static void main(String args[])
	{
		int number=0;
		Scanner SC=new Scanner(System.in);		
		
		while(true){			
			System.out.print("Enter an integer number (-1) to exit: ");
			number=SC.nextInt();			
			
			if(number==-1){
				System.out.println("Bye Bye...");
				System.exit(0); //exit program
			}
			//print number otherwise
			System.out.println("Number is: "+number);;
			
		}
	}
}
    

    Enter an integer number (-1) to exit: 10
    Number is: 10
    Enter an integer number (-1) to exit: 20
    Number is: 20
    Enter an integer number (-1) to exit: 0
    Number is: 0
    Enter an integer number (-1) to exit: 40
    Number is: 40
    Enter an integer number (-1) to exit: 50
    Number is: 50
    Enter an integer number (-1) to exit: -1
    Bye Bye...