<![CDATA[class Staff {
int staffid,phone,salary;
String name;
public Staff(int id , int no, int sal, String na){
staffid=id;
phone=no;
salary=sal;
name=na;
}
void display(){
System.out.println("-------------------------------------");
System.out.println("Staff ID:"+ " "+ staffid);
System.out.println("Staff Phone number:" + " "+ phone);
System.out.println("Staff Salary:" +" "+ salary);
System.out.println("Staff Name:" +" "+ name);
}
}
class Teaching extends Staff {
String domain;
int no_of_publications;
public Teaching(int id, int no, int sal, String na,String d,int nop){
super(id,no,sal,na);
domain=d;
no_of_publications=nop;
}
void Tdisplay(){
System.out.println("-------------------------------------");
System.out.println("Teaching Staff Details");
super.display();
System.out.println("Domain :" +" "+domain);
System.out.println("No_of_publications:"+" "+no_of_publications);
}
}
class Technical extends Staff{
String skills;
public Technical(int id , int no, int sal, String na,String sk){
super(id,no,sal,na);
skills=sk;
}
void Tedisplay(){
System.out.println("-------------------------------------");
System.out.println("Technical Staff Details");
super.display();
System.out.println("Skills :" + " "+skills);
}
}
class Contract extends Staff{
int period;
public Contract(int id , int no, int sal, String na,int pd){
super(id,no,sal,na);
period=pd;
}
void Cdisplay(){
System.out.println("-------------------------------------");
System.out.println("Contract Staff Details");
super.display();
System.out.println("ContractPeriod:" + " "+period + "years");
}
}
public class Multilevel{
public static void main(String args[]){
Teaching t1=new Teaching(11,998765434,31000,"Anil","CSE",10);
Teaching t2=new Teaching(12,996655546,30000,"Anu","ISE",9);
Teaching t3=new Teaching(13,999933442,32000,"Anusha","EEE",8);
t1.Tdisplay();
t2.Tdisplay();
t3.Tdisplay();
Technicalte1=new Technical(21,994433221,22000,"Kumar","C");
Technicalte2=new Technical(22,998877665,28000,"Krisna","Java");
Technical te3=new Technical(23,991654321,33000,"Kiran","Java");
te1.Tedisplay();
te2.Tedisplay();
te3.Tedisplay();
Contract ct1=new Contract(31,998765434,35000,"Anil",3);
Contract ct2=new Contract(32,912345678,39000,"Meghana",2);
Contract ct3=new Contract(33,992233445,30000,"Uma",4);
ct1.Cdisplay();
ct2.Cdisplay();
ct3.Cdisplay();
}
}]]>
