Java increment i = i++;

Question

    public static void main(String[] args) {
      int i = 0;
      i = i++;
      System.out.println(i);
}

This java code is printing value 0. How internally java assign value 0 to i instead of 1 ?

use ++i, instead of i++ – voucher_wolves Mar 20 '17 at 08:07 — voucher_wolves, Mar 20 '17 at 08:07
`i++`, not `i = i++`. – Louis Wasserman Mar 20 '17 at 16:57 — Louis Wasserman, Mar 20 '17 at 16:57

score 2 · Answer 1 · edited Mar 20 '17 at 08:11

2

The value of i++ is the value of i as it was, and it has a side effect of incrementing i (which is then immediately overwritten by the assignment)

Try assigning to j instead.

edited Mar 20 '17 at 08:11

Andy Turner

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answered Mar 20 '17 at 08:07

Thorbjørn Ravn Andersen

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Or not assigning at all. – Andy Turner Mar 20 '17 at 08:09
1

"`i+++`" is that the "really *really* increment" operator? :) – Andy Turner Mar 20 '17 at 08:11
@AndyTurner Typed on iphone where the text box is broader than the visible area of the web page so I didn't notice it. Not assigning at all does not help understanding the `++` operator. – Thorbjørn Ravn Andersen Mar 20 '17 at 08:18

Java increment i = i++;

1 Answers1