Java-HandsOn/JPR24.java at master · vaibhaviDixit/Java-HandsOn · GitHub

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package com.google;

/*
Author: Vaibhavi Dixit
code for demonstrate inheritance
* */
// super class Google
class Google{
    static String company="Google";
    int noOfEmployees=90000;
    void print(){
        System.out.println("Welcome to "+company);
        System.out.println("We have "+noOfEmployees+" no of employees.");
    }
    void work(){
        System.out.println("We are working in Google");
    }
}
/*
Single inheritance
Super class-Google
 child class- Development*/

class Development extends Google{
    int noOfEmployees=8000;
    void print(){
        System.out.println("We have "+noOfEmployees+" no of employees in development department.");
    }
    void work(){
        System.out.println("We are working in development department of "+company);
    }

}

/*
hierarchical inheritance
Super class-Google
 child class- Design*/

class Design extends Google{
    int noOfEmployees=12000;
    void print(){
        System.out.println("We have "+noOfEmployees+" no of employees in design department.");
    }
    void work(){
        System.out.println("We are working in design department of "+company);
    }
}

/*
multilevel inheritance
first super class-Google
Second Super class-Design
 child class- Testing */

class Testing extends Design{
    int noOfEmployees=19000;
    void print(){
        System.out.println("We have "+noOfEmployees+" no of employees in testing department.");
    }
    void work(){
        System.out.println("We are working in testing department of "+company);
    }
}

/*
single inheritance
Super class-Google
 child class- Sales*/

class Sales extends Google{
    int noOfEmployees=18000;
    void print(){
        System.out.println("We have "+noOfEmployees+" no of employees in sales department.");
    }
    void work(){
        System.out.println("We are working in sales department of "+company);
    }
}

/*
multilevel inheritance
first Super class-Google
second super class- Sales
 child class- Account*/

class Account extends Sales{
    int noOfEmployees=38000;
    void print(){
        System.out.println("We have "+noOfEmployees+" no of employees in account department.");
    }
    void work(){
        System.out.println("We are working in account department of "+company);
    }
}


public class JPR24 {
    public static void main(String[] args) {

        Google g1=new Google();
        g1.print();
        g1.work();

        Development d1=new Development();
        d1.work();
        d1.print();

        Design ds=new Design();
        ds.print();
        ds.work();

        Testing t1= new Testing();
        t1.print();
        t1.work();

        Sales s1=new Sales();
        s1.print();
        s1.work();

        Account ac=new Account();
        ac.work();
        ac.print();
    }
}