Inc dec operators

IncrementOperator.java

import java.util.Scanner;


public class IncrementOperator {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int pen = 5;
		int pencil = 1;
		//Post increment
		System.out.println(pen++);
		System.out.println(pen);
		//Pre increment
		System.out.println(++pencil);
		// add n to it
		pencil +=10;
		System.out.println(pencil);
		// mul n to it
		pencil *=10;
		System.out.println(pencil);
	}

}

output.txt

6
2
12
120