Java program for ++ Increment Operator

Introduction

In this post, we will discuss the Increment Operator in java language. We will look at some simple java program using the operator. We will have a look at the postfix-increment operation and prefix-increment operation in the program.

Syntax

++ Increment operator: increments a value by 1

Postfix increment

b = a++;

 

Prefix increment

b = ++a;

Java Program

// IncrementOperatorDemo.java program
public class IncrementOperatorDemo {

 public static void main(String[] args) {
 int a = 1; 
 a++; 

 //print the variable
 System.out.println("a after increment should print 2= " + a);

 int b;
 b= a++;// a is assigned to b and then incremented

 //print the variable
 System.out.println("b after post increment should print 2= " + b);
 // a value is 3 now
 b= ++a;// a value is incremented and assigned to b
 //print the variable
 System.out.println("b after pre increment should print 4= " + b);
 } 
}

 

In the program, we have initialized two variables a & b and then increment them using the operator. We print the post incremented ++ variables a & b.

Program Output

a after increment should print 2= 2
b after post increment should print 2= 2
b after pre increment should print 4= 4

Screenshot