Understanding Java Packages and Their Benefits
"Explore the concept of Java packages, including built-in and user-defined packages. Learn about the package hierarchy, types of packages, advantages of using packages in Java programming, and how to create user-defined packages. Enhance your understanding of organizing classes and interfaces for better code reusability. Discover how packages help in structuring and maintaining Java code efficiently." (446 characters)
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JAVA PACKAGES Presented By, Ms.M.Jancypriya, Asst. Prof., Dept. of CA, Bon Secours College for Women, Thanjavur.
PACKAGES Packages in Java is a mechanism to encapsulate a group of classes, interfaces and sub packages. In java there are already many predefined packages that we use while programming. For example: java.lang, java.io, java.util etc.
TYPES OF PACKAGES There are basically only 2 types of java packages. Built-inPackages or Java API User Defined Packages.
Built-in Packages java.lang java .util java.io java.awt java.net java.applet
USER DEFINED PACKAGES Creating User Defined Packages Syntax : package packageName; public class className { - - - - - - - - - - - - - // Body of className - - - - - - - - - - - - }
Example package myPackage; public class class1 {- - - - - - - - - - - - - // Body of class1 }
Advantages of Packages Packages are useful to arrange related classes and interface into a group. Packages hide the classes & interfaces in a seprate subdirectory. The classes & interfaces of a packages are isolated form the classes & interfaces of another packages. Reusability of code is one of the most important requirements in the software industry.
