Answer to Question #171076 in Java | JSP | JSF for David

Question

Write four different Java statements that each add 1 to integer variable x.

Answer 1

Hi, this is the code.

public static void main(String[] args) {
 
 int x = 0;

 x=x+1;
 System.out.println("Way 1: x+1 = " + x);
 x=0;

 x++;
 System.out.println("Way 2: x++ = " + x);
 x=0;

 ++x;
 System.out.println("Way 3: ++x = " + x);
 x=0;

 AtomicInteger xAtomic = new AtomicInteger(x);
 xAtomic.incrementAndGet();
 x = xAtomic.intValue();
 System.out.println("Way 4: xAtomic.incrementAndGet() = " + x);
}

The output is:

Way 1: x+1 = 1
Way 2: x++ = 1
Way 3: ++x = 1
Way 4: xAtomic.incrementAndGet() = 1