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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