W3School TIY Editor

import java.util.ArrayList;

import java.util.Collections;

​

// 定义汽车类

class Car {

  public String brand;

  public String model;

  public int year;

  public Car(String b, String m, int y) {

    brand = b;

    model = m;

    year = y;

  }

}

​

public class Main { 

  public static void main(String[] args) { 

    // 创建汽车列表

    ArrayList<Car> myCars = new ArrayList<Car>();    

    myCars.add(new Car("BMW", "X5", 1999));

    myCars.add(new Car("Honda", "Accord", 2006));

    myCars.add(new Car("Ford", "Mustang", 1970));

​

    // 使用lambda表达式对汽车排序

    Collections.sort(myCars, (obj1, obj2) -> {

      Car a = (Car) obj1;

      Car b = (Car) obj2;

      if (a.year < b.year) return -1;

      if (a.year > b.year) return 1;

      return 0;

    });

​

    // 显示汽车信息

    for (Car c : myCars) {

      System.out.println(c.brand + " " + c.model + " " + c.year);

    }

  } 

}