lab2a.java

class Staff
{
	private int StaffId;
	private String Name;
	private String Phone;
	private long Salary;
	
	public Staff(int staffId,String name,String phone,long salary)
	{
		StaffId = staffId;
		Name = name;
		Phone = phone;
		Salary = salary;
	}
	public void Display()
	{
		System.out.print("\t"+StaffId+"\t"+Name+"\t\t"+Phone+"\t\t"+Salary);
	}
}

class Teaching extends Staff
{
	private String Domain;
	private int Publications;
	
	public Teaching(int staffId, String name, String phone,long salary, String domain, int publications)
	{
		super(staffId, name, phone, salary);
		Domain = domain;
		Publications = publications;
	}
	public void Display()
	{
		super.Display();
		System.out.print("\t\t"+Domain+"\t\t"+Publications+"\t\t"+"--"+"\t"+"--");
	}
}

class Technical extends Staff
{
	private String Skills;
	public Technical(int staffId, String name, String phone,long salary, String skills)
	{
		super(staffId, name, phone, salary);
		Skills = skills;
	}
	public void Display()
	{
		super.Display();
		System.out.print("\t\t--"+"\t\t"+"--"+"\t"+Skills+"\t"+"--");
	}
}

class Contract extends Staff
{
	private int Period;
	public Contract(int staffId, String name, String phone,	long salary, int period)
	{
		super(staffId, name, phone, salary);
		this.Period = period;
	}
	public void Display()
	{
		super.Display();
		System.out.print("\t\t--"+"\t\t"+"--"+"\t\t"+"--"+"\t"+Period);
	}
}

public class lab2a
{
	public static void main(String[] args)
	{
	Staff staff[]=new Staff[3];
	staff[0]=new Teaching(0001,"Narendr","271173",90000,"CSE",3);
	staff[1]=new Technical(0002,"Ara","271172",2000,"Server Admin");
	staff[2]=new Contract(0003,"Rahul","271174",9000,3);
	System.out.println("Staff ID\tName\t\tPhone\t\tSalary\t\tDomain\tPublication\tSkills\t\tPeriod");
	for(int i=0;i<3;i++)
	{
		staff[i].Display();
		System.out.println();
	}
	}
}