Introduction to JAVA Package

package pakpak;

import p2.Show2;

public class Main{
    public static void main(String args[]){
        Show2 sw = new Show2();
    }
}

package p1;

public class Show {
    public Show(){
        System.out.println("This is package 1");
    }
}

package p2;

public class Show2 extends p1.Show{
    public Show2(){
        System.out.println("This is package 2");
    }
}