staff detail.txt

Design a super class called Staff with details as StaffId, Name, Phone, Salary. Extend this class by writing three subclasses namely 
Teaching (domain, publications), Technical (skills), and Contract (period). 
Write a Java program to read and display at least 3 staff objects of all three categorie.


import java.util.Scanner;

class Staff 
{
	String StaffID, Name, Phone, Salary;

	Scanner input = new Scanner(System.in);

	void read() 
{
		System.out.println("Enter StaffID");
		StaffID = input.nextLine();

		System.out.println("Enter Name");
		Name = input.nextLine();

		System.out.println("Enter Phone");
		Phone = input.nextLine();

		System.out.println("Enter Salary");
		Salary = input.nextLine();
	}

	void display() 
{
		System.out.printf("\n%-15s", "STAFFID: ");
		System.out.printf("%-15s \n", StaffID);
		System.out.printf("%-15s", "NAME: ");
		System.out.printf("%-15s \n", Name);
		System.out.printf("%-15s", "PHONE:");
		System.out.printf("%-15s \n", Phone);
		System.out.printf("%-15s", "SALARY:");
		System.out.printf("%-15s \n", Salary);
	}
}


class Teaching extends Staff 
{
	String Domain, Publication;

	void read_Teaching() 
{
		super.read(); // call super class read method
		System.out.println("Enter Domain");
		Domain = input.nextLine();
		System.out.println("Enter Publication");
		Publication = input.nextLine();	
	}

	void display() 
{
		super.display(); // call super class display() method
		System.out.printf("%-15s", "DOMAIN:");
		System.out.printf("%-15s \n", Domain);
		System.out.printf("%-15s", "PUBLICATION:");
		System.out.printf("%-15s \n", Publication);
	}
}


class Technical extends Staff 
{
	String Skills;

	void read_Technical() 
{
		super.read(); // call super class read method
		System.out.println("Enter Skills");
		Skills = input.nextLine();
	}

	void display() 
{
		super.display(); // call super class display() method
		System.out.printf("%-15s", "SKILLS:");
		System.out.printf("%-15s \n", Skills);
	}
}


class Contract extends Staff 
{
	String Period;

	void read_Contract()
{
		super.read(); // call super class read method
		System.out.println("Enter Period");
		Period = input.nextLine();
	}

	
void display() 
{
		super.display(); // call super class display() method
		System.out.printf("%-15s", "PERIOD:");
		System.out.printf("%-15s \n", Period);
	}
}

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

		Scanner input = new Scanner(System.in);

		System.out.println("Enter number of staff details to be created");
		int n = input.nextInt();

		Teaching steach[] = new Teaching[n];
		Technical stech[] = new Technical[n];
		Contract scon[] = new Contract[n];

		// Read Staff information under 3 categories

		for (int i = 0; i < n; i++) 
{
			System.out.println("Enter Teaching staff information");
			steach[i] = new Teaching();
			steach[i].read_Teaching();
		}

		for (int i = 0; i < n; i++) 
{
			System.out.println("Enter Technical staff information");
			stech[i] = new Technical();
			stech[i].read_Technical();
		}

		for (int i = 0; i < n; i++) 
{

			System.out.println("Enter Contract staff information");
			scon[i] = new Contract();
			scon[i].read_Contract();
		}

		// Display Staff Information
		System.out.println("\n STAFF DETAILS: \n");
		System.out.println("-----TEACHING STAFF DETAILS----- ");

		for (int i = 0; i < n; i++) 
{
			steach[i].display();
		}

		System.out.println();
		System.out.println("-----TECHNICAL STAFF DETAILS-----");
		for (int i = 0; i < n; i++) 
{
			stech[i].display();
		}

		System.out.println();
		System.out.println("-----CONTRACT STAFF DETAILS-----");
		for (int i = 0; i < n; i++) 
{
			scon[i].display();
		}
		
		input.close();
	}
}