[Java] Package

 Package

- Package is a group of similar types of classes, interface and sub-packages

- built-in package(java, lang, awt, javax...) and user-defined package

1. Advantage of Java Package

- Java package is used to categorize the classes and interface so that they can be easily maintained

- It provides access protection

- It removes naming collision

2. How to compile and run java package

1) compile

//javac -d directory javafilename javac -d . Simple.java

2) run

java mypack.Simple