自定义比较器

package org.jeecg.modules.develop.api.livePort;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

// 创建一个泛型类
class MyObject {
private T data;

public MyObject(T data) {this.data = data;
}public T getData() {return data;
}

}

// 创建一个泛型比较器
class MyComparator<T extends Comparable> implements Comparator<MyObject> {
@Override
public int compare(MyObject obj1, MyObject obj2) {
return obj2.getData().compareTo(obj1.getData());
}
}

class Main {
public static void main(String[] args) {
List<MyObject> numbers = new ArrayList<>();
numbers.add(new MyObject<>(5));
numbers.add(new MyObject<>(2));
numbers.add(new MyObject<>(7));
numbers.add(new MyObject<>(10));
numbers.add(new MyObject<>(3));

    // 使用自定义泛型比较器对对象列表进行排序Collections.sort(numbers, new MyComparator<>());// 打印排序后的结果for (MyObject<Integer> obj : numbers) {System.out.println(obj.getData());}
}

}