Increment operation question

[Garrett Rowe]

I was reading over some posts in the SCJP forum and there was a question about the increment operation. Alhough I think I understood the answer there, I came up with a puzzling problem of my own that I cannot figure out.

Consider this code:

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

the output is:

1
0

Although I can't follow the flow to figure out why.

[marc weber]

i = j++; //i is set to 0, after which j is incremented to 1
j = i++; //j is set to 0, after which i is incremented to 1

[Garrett Rowe]

Then why is the output of System.out.println(i) 1 ? Sorry, I'm slow

[Garrett Rowe]

nevermind, I see, i is incremented in the second assignment. j = i++; Told you I was slow.

[Ankur Sharma]

Well this is such a simple solution that Java works on Stack Memory for local Variables thus the value of J is still 0. I hope you can understand now.