Java Question

[P Jain]

What is the difference between Package and Interface.

[Ernest Friedman-Hill]

Hi,

Welcome to JavaRanch!

I'm moving your question to Java in General (Beginner), where it will be more on-topic and likely to get an answer.

[Marilyn de Queiroz]

An Interface is more like (not exactly) an Abstract Class. Its methods are not implemented and its variables are constants.

A Package is more like (not exactly) a Path to the class. For example, if a class is in a package com.javaranch.common, it may be found in a directory structure like this:

com
..common
....javaranch
......common

[Paul Santa Maria]

Another way of looking at it is like this:

1. A "package" is a namespace. It lets you distinguish between two different classes from two different places that both happen to have the same name (e.g. "com.javaranch.common.Print" vs. "org.someneattoolkit.print").

2. An "interface" is a contract. Any class which "implements" a given interface "promises" to provide each of the methods - with exactly the specified arguments - to any client which invokes it.

'Hope that helps .. PSM