9.java

importjava.util.*;

classFruitimplementsComparable<Fruit> {

privateStringname;
privateintscore;

publicFruit(Stringname, intscore) {
this.name = name;
this.score = score;
 }

publicStringgetName() {
returnthis.name;
 }

publicintgetScore() {
returnthis.score;
 }

// 정렬 기준은 '점수가 낮은 순서'
@Override
publicintcompareTo(Fruitother) {
if (this.score < other.score) {
return -1;
 }
return1;
 }
}

publicclassMain {

publicstaticvoidmain(String[] args) {
List<Fruit> fruits = newArrayList<>();

fruits.add(newFruit("바나나", 2));
fruits.add(newFruit("사과", 5));
fruits.add(newFruit("당근", 3));

Collections.sort(fruits);

for (inti = 0; i < fruits.size(); i++) {
System.out.print("(" + fruits.get(i).getName() + "," + fruits.get(i).getScore() + ") ");
 }
 }
}