SE450: Basics: Passing Parameters [32/63]

What does the following print?

file:Main.java [source] [doc-public] [doc-private]

01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 package basics.swap; public class Main { private Main() {} static public void main (String[] args) { //stdlib.Trace.graphvizShowSteps (true); stdlib.Trace.showBoxedPrimitivesAsPrimitive(false); stdlib.Trace.run (); Integer x = 42; Integer y = 27; Main.swap(x,y); System.out.println(x); System.out.println(y); } static private void swap (Integer a, Integer b) { Integer t = a; a = b; b = t; } }

Java is call-by-value.

Call by Value Links

Cup Size -- a story about variables by JavaRanch.

Pass-by-Value Please By JavaRanch.

Does Java pass by reference or pass by value? Why can't you swap in Java? By Tony Sintes.