Question

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Is there a difference between x++ and ++x in java?

Can anyone please explain me what is happening backyard to these statements?

int x=5;
 System.out.println((x++)*x); //Gives output as 30




int x=5;
 System.out.println((++x)*x); //Gives output as 36.

Answer 1

int x=5;
 System.out.println((x++)*x); //Gives output as 30

You first take x (x = 5) as an operand. Then it’s incremented to 6 which is second operand.

int x=5;
 System.out.println((++x)*x); //Gives output as 36.

You first increment x by one (x = 6) and then multiply by x => 6 * 6 = 36