Increment/Decrement operators
1. Note
The increment/decrement operators can be applied before (prefix) or
after (postfix) the operand.
The code result++; and ++result; will both end in result being
incremented by one.
The only difference is that*the prefix version (++result) evaluates to
the incremented value,
whereas the postfix version (result++) evaluates to the original
value.
If you are just performing a simple increment/decrement, it doesn’t
really matter which version you choose.
But if you use this operator in part of a larger expression, the one
that you choose may make a significant difference.
The following program, PrePostDemo, illustrates the prefix/postfix unary increment operator:
class PrePostDemo { │ public static void main(String[] args) { │ int i = 3; │ i++; │ System.out.println(i); // "4" │ ++i; │ System.out.println(i); // "5" │ System.out.println(++i); // "6" │ System.out.println(i++); // "6" │ System.out.println(i); // "7" │ } }