I have written three java classes, and now need to sort the input array by the n
ID: 3894246 • Letter: I
Question
I have written three java classes, and now need to sort the input array by the name stored in each object. This is a case-sensitive lexicographic order sort. This is the assignment http://cs.sou.edu/~nordquip/cs257/labs/l6/doc/index.html and this is what I have written previously. My program runs fine, I just cannot figure out how to sort the array. Can you explain how to sort it lexicographically?
public class Manager extends Worker {
// do not produce anything
private int numberSubordinates;
private boolean wellLiked;
public Manager(String name, int numberSubordinates, boolean wellLiked) {
super(name);
this.numberSubordinates = numberSubordinates;
this.wellLiked = wellLiked;
}
public boolean liked(boolean liked) {
if (liked = true) {
wellLiked = true;
return wellLiked;
}
else {
wellLiked = false;
return wellLiked;
}
}
public long work(long units) {
if (units <= 0) {
getUnitsWorked();
return getUnitsWorked();
}
else {
setUnitsWorked(Math.round(units * numberSubordinates * .75) + getUnitsWorked());
return getUnitsWorked();
}
}
public String toString() {
return super.toString() + " , " + numberSubordinates + " ," + wellLiked;
}
public static void main(String[] args) {
Manager m1 = new Manager("BM", 2, false);
m1.work(3);
}
}
public class Worker {
private long unitsWorked;
private String name;
// store name and number of units earned
public Worker(String name) {
this.name = name;
}
public String getName() {
this.name = name;
return name;
}
public long work(long units) {
if (units <= 0) {
return unitsWorked;
}
else {
unitsWorked = units + unitsWorked;
return unitsWorked;
}
}
public String toString() {
return super.toString() + "," + unitsWorked + "," + name;
}
public double pay(double multiplier) {
multiplier = unitsWorked * multiplier;
unitsWorked = 0;
return multiplier;
}
public static void main(String[] args) {
Worker w = new Worker("Jm");
w.work(3);
}
public long getUnitsWorked() {
return unitsWorked;
}
public void setUnitsWorked(long unitsWorked) {
this.unitsWorked = unitsWorked;
}
}
public class Producer extends Worker {
private int productionTarget;
public Producer(String name, int productionTarget) {
super(name);
this.productionTarget = productionTarget;
}
// do not manage anything
public int getProductionTarget() {
this.productionTarget = productionTarget;;
return productionTarget;
}
public String toString() {
return super.toString() + " , " + productionTarget;
}
public long work(long units) {
if (units <= 0) {
getUnitsWorked();
return getUnitsWorked();
}
else {
setUnitsWorked(Math.round(productionTarget * .5 * units) + getUnitsWorked());
return getUnitsWorked();
}
}
}
Explanation / Answer
In the main method add this line, where objects can be an arraylist of objects of workers or managers.
Collections.sort(objects);
Add implements Comparable<Manager> and implements Comparable<Worker> at the class definition like
public class Manager extends Worker implements Comparable<Manager>{
public class Worker implements Comparable<Worker> {
Add the below method in each class
**For Manager class
public int compareTo(Manager other) {
return name.compareTo(other.name);
}
**For Worker class
public int compareTo(Worker other) {
return name.compareTo(other.name);
}
**Comment for any further queries.