Postfix vs Prefix Increment/Decrement Operator

int i = 10;
System.out.println(“i++=” + (i++)); // prints 10 and then increments
System.out.println(“i=” + i); // prints 11

int j = 20;
System.out.println(“++j=” + (++j)); // increments and then prints 21
System.out.println(“j=” + j); // prints 21