import java.util.*;

// Test out the list of workers, show Arrays.sort
public class WorkerListTest {

   public static void main(String args[]) {
      WorkerList list = new WorkerList();

      // build a small list of workers
      Worker w = new Worker("zander", 20);
      boolean success = list.append(w);
      if (!success) { /* handle error */ }

      w = new Worker("dickey", 10);
      success = list.append(w);
      if (!success) { /* handle error */ }

      w = new Worker("mouse");
      success = list.append(w);
      if (!success) { /* handle error */ }

      w = new Worker("duck");
      success = list.append(w);
      if (!success) { /* handle error */ }

      // display unsorted list
      System.out.println("Unsorted List:");
      list.display();
      System.out.println();

      // sort and display sorted list
      list.sortList();
      System.out.println("Sorted List:");
      list.display();
   }
}

//----------------------------  WorkerList  ---------------------------------- 
class WorkerList {
   private Worker [] employees;
   public static final int MAXNUMEMP = 20;
   private int count = 0;

   public WorkerList() {
      employees = new Worker[MAXNUMEMP];
   }

   //--------------------------  sortList  -----------------------------------
   public void sortList() {
      Arrays.sort(employees, 0, count);
   }

   //--------------------------  append  -------------------------------------
   public boolean append(Worker person) {
      if (count < MAXNUMEMP) {
         employees[count++] = person;     // first assign, then increment
         return true;
      }
      return false;
   }

   //--------------------------  getSize  ------------------------------------
   public int getSize() {
      return count;
   }

   //--------------------------  display  ------------------------------------
   public void display() {
      for (int i = 0; i < count; i++) {
         System.out.println(employees[i]);
      }
   }
}