package prob-when copying files

I write a program to copy one file from one package to another package.

In eclipse, file need to claim the package it is in rigorously.

e.g. in Package A I have test.java:

package A;

public class test( ){

..

}

If I want to move to package B, I also need to change the package name manually to

package B;

public class test( ){

}

In my program that copies the file from one package to another one, how can I change the package name specified in the file automatically?

Many thanks

[557 byte] By [evanling1980a] at [2007-10-2 23:35:00]