Multilevel Inheritance

This  program  is  show  multilevel inheritance . Here  we try to calculate the salary of the
 employee take  command line inputs   of the Employee . We will input  employee details
 and basic salary then  it  calculate  salary details

import java.io.*; 

import java.lang.*;

class emp

{

String ename;

int empno; 

String desig;

void readdata()throws IOException

{

DataInputStream dis=new DataInputStream(System.in);

System.out.println("enter emp name"); 

ename=dis.readLine(); 

System.out.println("enter empno");

empno=Integer.parseInt(dis.readLine()); 

System.out.println("enter designation");

desig=dis.readLine(); }

}

class basic extends emp {

double bsal;

double da; 

double hra;

void readbsal()throws IOException {

DataInputStream dis=new DataInputStream(System.in); 

System.out.println("enter basic salary"); 

bsal=Double.parseDouble(dis.readLine());

}

void calhrada() {

da=bsal*0.95;

hra=bsal*0.15; 

 }

}

class grosssal extends basic

{

 double gsal;

 void display() {

       

    gsal=bsal+da+hra;

   System.out.println("empno: "+empno); 

   System.out.println("empname: "+ename); 

 System.out.println("degnisation: "+desig); 

  System.out.println("basic sal: "+bsal); 

  System.out.println("da: "+da);

  System.out.println("hra: "+hra);

  System.out.println("gross sal: "+gsal);

     }

  }

 class ComputeSalary{

 public static void main(String args[]) throws IOException {

  grosssal g=new grosssal();

     g.readdata();

     g.readbsal();

     g.calhrada(); 

     g.display();

   } 

}

Program out  of this  code  is  calculate salary of an employee when you input  

the basic salary .

enter emp name

Mahadev

enter empno

11123

enter designation

SSO

enter basic salary

30000

empno: 11123

empname: Mahadev

degnisation: SSO

basic sal: 30000.0

da: 28500.0

hra: 4500.0

gross sal: 63000.0