How to Create PACKAGE in Java: Learn with Example Program
What is Package in Java?
A Package is a collection of related classes. It helps organize your classes into a folder structure and make it easy to locate and use them. More importantly, it helps improve re-usability.
Each package in Java has its unique name and organizes its classes and interfaces into a separate namespace, or name group.
Although interfaces and classes with the same name cannot appear in the same package, they can appear in different packages. This is possible by assigning a separate namespace to each package.
Let’s study package with an example. We define a class and object and later compile this it in our package p1. After compilation, we execute the code as a java package.
Step 1) Consider the following code,
- To put a class into a package, at the first line of code define package p1
- Create a class c1
- Defining a method m1 which prints a line.
- Defining the main method
- Creating an object of class c1
- Calling method m1
Step 2) In next step, save this file as demo.java