Packages

1.WAJP to create and demonstrate packages.

Program:

                                         downloadlink for package

 Package:

package com.edu.cllege;
public class parent
{
public void m1()
{
System.out.println("parent m1()");
}
}
 

Program:

package org.edu1.college1;
import java.io.*;
import com.edu.college.parent;

class Child extends com.edu.college.Parent

{
 void m2()
 {
  System.out.println("calling superclass method");
 
  m1();
 
 }
}
class PackageTest
{
  public static void main(String[] args) throws Exception
  {
    File F=new File("My file.txt");
   
    parent obj=new Parent();
   
    child obj1=new Child();
   
    obj.m1();
   
    obj.m2();
  }

if(!f.exists())
 {
  F.createNewFile();

  System.out.println("file create");
 }
 else
  {
    System.out.println("error in file creation");
  }
 }
 }