}
(Choose 1 answer)
What is the output of the following program?
import java.util.*;
class Pen implements Comparable<Pen> {
String color; int price;
Pen(String color, int price) { this.color=color; this.price=price; } public String toString() { return("("+color+","+price+") "); }
public int compareTo(Pen x) {
int k = color.compareTo(x.color);if(k!=0) return(-k);
return(x.price - price);
}
public class Main {
public static void main(String[] args) {
List<Pen> t = new ArrayList<>();t.add(new Pen("B",3));
t.add(new Pen("C",4));
t.add(new Pen("D",7));
t.add(new Pen("C",5));
t.add(new Pen("A",6));
Collections.sort(t);
for(Pen x: t) System.out.print(x);
System.out.println();
}
}
Α. (Α,6) (Β,3) (C,4) (C,5) (D,7)
B. (D,7) (C,5) (C,4) (B,3) (A,6)
C. (B,3) (C,5) (D,7) (C,4) (A,6)
D. (B,3) (C,4) (C,5) (A,6) (D,7)
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