Does Java pass by reference or pass by value? (Why can't you swap in Java?) @ 小工程師@翡翠城

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Jan 05 Fri 2007 14:38
Does Java pass by reference or pass by value? (Why can't you swap in Java?)

#!/bin/bash
#Program:
#History: Jan. 5, 2007 rusin first release
PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin export PATH

http://www.javaworld.com/javaworld/javaqa/2000-05/03-qa-0526-pass.html

- Java passes the references by value just like any other parameter. 

This means the references passed to the method are actually copies of the original references.

- Java manipulates objects 'by reference,' but it passes object references to methods 'by value.'" 

As a result, you cannot write a standard swap method to swap objects.