9.1 Introduction to packages
A java package is a group of similar types of classes, interfaces and sub-packages.
Package in java can be categorized in two form, built-in package and user-defined package.
There are many built-in packages such as java, lang, awt, javax, swing, net, io, util, sql etc.
Advantage of Java Package
1) Java package is used to categorize the classes and interfaces so that they can be easily maintained.
2) Java package provides access protection.
3) Java package removes naming collision.
Example
The package keyword is used to create a package in java.
package mypack;
public class Simple{
public static void main(String args[]){
System.out.println(“Welcome to package”);
}
}
Download for more knowledge
https://play.google.com/store/apps/details?id=ab.java.programming
QCOM 