Java: Why does this swap method not work? -


i have following code:

public class main {      static void swap (integer x, integer y) {         integer t = x;         x = y;         y = t;     }      public static void main(string[] args) {        integer = 1;        integer b = 2;        swap(a, b);        system.out.println("a=" + + " b=" + b);     }  }

i expect print a=2 b=1, prints opposite. swap method doesn't swap , b values. why?

this doesn't have immutability of integers; has fact java pass-by-value, dammit! (not annoyed, title of article :p )

to sum up: can't make swap method in java. have swap yourself, wherever need it; 3 lines of code anyways, shouldn't of problem :)

    thing tmp = a;     = b;     b = tmp;

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