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user define packages

  Asked By: Jason    Date: Aug 30    Category: Java    Views: 1232

i don't understand how to create and use,user define packages.
where i can save my packages and how can i use them?



1 Answer Found

Answer #1    Answered By: Willie Gomez     Answered On: Aug 30

Creating & Using packages  in Java is very very simple...

first u have add the "package <package_name>;" line in your every java
program tht u want to add inside a package.

u have to mention the directory while compiling
javac -d <dir_name> <java_file.java>

to run u have to mention package name in command line
java <package>.<main_class>


package mypackage;

public class PackageDemo
public static void main(String args[])
System.out.println("Hello, world!!");

javac -d C:\JavaDemo PackageDemo.java

java mypackage.PackageDemo

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