How to import a package

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How to import a package

There are two ways so that you can use the public classes stored in package.

There are two ways so that you can use the public classes stored in package.

How to import a package

     

There are two ways so that you can use the public classes stored in package.
  • Declaring the fully-qualified class name. For example,
mypackage.HelloWorld helloworld = new mypackage.HelloWorld();
  • Using an "import" keyword: For example,
       import world.*;    // we can call any public classes inside the mypackage package 

Lets see an example importing the created package into the another program file.

 

package importpackage;

public class HelloWorld {
  public void show(){
  System.out.println("This is the function of the class HelloWorld!!");
  }
}

In this program the package "importpackage" is created under the "c:\nisha" directory that will be imported into another program file to call the function of the class "HelloWorld".
Now make a program file named "CallPackage" under the "c:\nisha" directory  importing the package "importpackage".

 

import importpackage.*;

class CallPackage{
  public static void main(String[] args){
  HelloWorld h2=new HelloWorld();
  h2.show();
  }
}

Out of the program:

C:\nisha\importpackage>javac *.java

C:\nisha\importpackage>cd..

C:\nisha>javac CallPackage.java

C:\nisha>java CallPackage
This is the function of the class HelloWorld!!

Make sure to the directory structure for this program shown as:

 

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