In Java

Please create an Graduate Class.

Please write the compareTo methods in all the necessary classes in the code provided

Please write the WriteOutput methods in all the necessary classes in the code provided

/* This program inputs the Undergraduates, puts them into an ArrayList, prints out the (sorted)list. This is then repeated for for Graduates, Faculty, and Staff.

Undergrads and grads are sorted according to ID. Faculty are sorted according to Department and Staff according to Salary. */ package H9;

import java.io.File; import java.io.FileNotFoundException; import java.util.ArrayList; import java.util.Collections; import java.util.Scanner;

public class H9 {

public static void main(String[] args) { /******************************* * UNDERGRADUATES * ***************************/ File inFile = new File("undergrad.in"); Scanner fileInput = null; try { fileInput = new Scanner(inFile); } catch (FileNotFoundException ex) { //Logger.getLogger(Lab10.class.getName()).log(Level.SEVERE, null, ex); } //create an arrayList ArrayList myList = new ArrayList(); //input into the ArrayList while(fileInput.hasNext()) { int id=fileInput.nextInt(); int lev=fileInput.nextInt(); String name=fileInput.nextLine(); Undergraduate s=new Undergraduate(name, id, lev); myList.add(s); } //sort the arrayList Collections.sort(myList); //Output the sorted list System.out.println("*************************************"); System.out.println("The undergrads sorted according to ID"); System.out.println("*************************************"); for(int i=0; i { myList.get(i).writeOutput(); System.out.println(); } //close the input file fileInput.close(); /******************************* * GRADUATES * ***************************/ inFile = new File("graduate.in"); try { fileInput = new Scanner(inFile); } catch (FileNotFoundException ex) { //Logger.getLogger(Lab10.class.getName()).log(Level.SEVERE, null, ex); } //create an arrayList ArrayList myList2 = new ArrayList(); //input into the ArrayList while(fileInput.hasNext()) { int id=fileInput.nextInt(); String lev=fileInput.next(); String thesis=fileInput.next(); boolean t; if(thesis.equals("yes")) t=true; else t=false; String name=fileInput.nextLine(); Graduate s=new Graduate(name, id, lev, t); myList2.add(s); } //sort the arrayList Collections.sort(myList2); //Output the sorted list System.out.println("*************************************"); System.out.println("The grads sorted according to ID"); System.out.println("*************************************"); for(int i=0; i { myList2.get(i).writeOutput(); System.out.println(); } //close the input file fileInput.close(); /******************************* * Faculty * ***************************/ inFile = new File("faculty.in"); try { fileInput = new Scanner(inFile); } catch (FileNotFoundException ex) { //Logger.getLogger(Lab10.class.getName()).log(Level.SEVERE, null, ex); } //create an arrayList ArrayList myList3 = new ArrayList(); //input into the ArrayList while(fileInput.hasNext()) { double salary =fileInput.nextDouble(); int year=fileInput.nextInt(); int ID = fileInput.nextInt(); String dept=fileInput.next(); String title=fileInput.next(); String name=fileInput.nextLine(); Faculty s=new Faculty(title, name, salary, year,ID, dept); myList3.add(s); } //sort the arrayList Collections.sort(myList3); //Output the sorted list System.out.println("*************************************"); System.out.println("The faculty sorted according to department"); System.out.println("*************************************"); for(int i=0; i { myList3.get(i).writeOutput(); System.out.println(); } //close the input file fileInput.close(); /******************************* * Staff * ***************************/ inFile = new File("staff.in"); try { fileInput = new Scanner(inFile); } catch (FileNotFoundException ex) { //Logger.getLogger(Lab10.class.getName()).log(Level.SEVERE, null, ex); } //create an arrayList ArrayList myList4 = new ArrayList(); //input into the ArrayList while(fileInput.hasNext()) { double salary =fileInput.nextDouble(); int year=fileInput.nextInt(); int ID = fileInput.nextInt(); String dept=fileInput.next(); int PG=fileInput.nextInt(); String name=fileInput.nextLine(); Staff s=new Staff(PG, name, salary, year,ID, dept); myList4.add(s); } //sort the arrayList Collections.sort(myList4); //Output the sorted list System.out.println("*************************************"); System.out.println("The staff sorted according to salary"); System.out.println("*************************************"); for(int i=0; i { myList4.get(i).writeOutput(); System.out.println(); } //close the input file fileInput.close(); } }// end main

//Faculty Class package testemployee; // extends Employee public class Faculty extends Employee { private String title;// instance field // constructor without title public Faculty(String initialName, double initialSalary, int joinedYear, String id) { super(initialName, initialSalary, joinedYear, id); this.title = ""; } // constructor with title public Faculty(String initialName, double initialSalary, int joinedYear, String id, String title) { super(initialName, initialSalary, joinedYear, id); this.title = title; } // getter public String getTitle() { return title; } //setter public void setTitle(String title) { this.title = title; } @Override public void writeOutput() { super.writeOutput(); System.out.println("Title: " + title); } }

//Staff Class

package testemployee; // extends Employee public class Staff extends Employee { private int payGrade;// instance field // constructor without payGrade public Staff(String initialName, double initialSalary, int joinedYear, String id) { super(initialName, initialSalary, joinedYear, id); this.payGrade = 0; } // constructor with payGrade public Staff(String initialName, double initialSalary, int joinedYear, String id, int grade) { super(initialName, initialSalary, joinedYear, id); this.payGrade = grade; } // getter public int getPayGrade() { return payGrade; } //setter public void setPayGrade(int grade) { this.payGrade = grade; } @Override public void writeOutput() { super.writeOutput(); System.out.println("Pay Grade: " + payGrade); } }