Question

Hey, I have this Data Structures homework Im struggling to finish. I need to Define a class Worker derived from Human with fields WeekSalary and WorkHoursPerDay and method MoneyPerHour() that returns the payment earned by hour by the worker. And I have to initialize a list of 10 workers and sort them by payment per hour in descending order. I have already created the super class Human holding a first name and a last name. As Worker extends human.

Please help, Thanks in advance

Answer 1

Below is the code for your requirement. Please comment if you face any difficulty.

Code:

===

package com.dont.know;

import java.util.Arrays;

public class WorkersDemo {
   public static void main(String[] args) {
       Worker w1 = new Worker("1", "bbb", 5600, 8);
       Worker w2 = new Worker("2", "ccc", 56000, 8);
       Worker w3 = new Worker("3", "ddd", 560000, 8);
       Worker w4 = new Worker("4", "fff", 5600000, 8);
      
       Worker[] w_arr = new Worker[4];
       w_arr[0] = w1;
       w_arr[1] = w2;
       w_arr[2] = w3;
       w_arr[3] = w4;
       Arrays.sort(w_arr);
       for(int i=0; i<4; i++){
          
           System.out.println(w_arr[i].firstName+" "+w_arr[i].lastName);
       }
   }
}

class Worker extends Human implements Comparable<Worker>{
   int weekSalary = 0, workHoursPerDay = 0, salaryPerHour = 0;
  
   Worker(String firstName, String lastName, int weekSalary, int workHoursPerDay){
       super(firstName, lastName);
       this.weekSalary = weekSalary;
       this.workHoursPerDay = workHoursPerDay;
   }
  

   @Override
   public int compareTo(Worker o1) {
       salaryPerHour = weekSalary/(7*workHoursPerDay);
  
       if(o1.salaryPerHour > this.salaryPerHour){
           return 1;
       }
       else if(o1.salaryPerHour < this.salaryPerHour){
           return -1;
       }
       return 0;
   }
  
}

class Human{
   String firstName;
   String lastName;
  
   Human(String firstName, String lastName){
       this.firstName = firstName;
       this.lastName = lastName;
   }
  
}

Output:

======