JAVA8学习之Lambada排序与list.sort匿名内部类排序

 public static void main(String[] args) {
        Apple a = new Apple();
        a.setColor("green");
        a.setWeight("200");
        Apple a2 = new Apple();
        a2.setWeight("100");
        a2.setColor("green");
        Apple a3 = new Apple();
        a3.setColor("red");
        a3.setWeight("250");
        List<Apple> alist = new ArrayList();
        alist.add(a);
        alist.add(a2);
        alist.add(a3);
//      我们对alist进行排序  采用匿名内部类 结合行为参数化（降序）
      /*  alist.sort(new Comparator<Apple>() {
            public int compare(Apple o1, Apple o2) {
                return o2.getWeight().compareTo(o1.getWeight());
            }
        });*/
//用lambda表达式就更加简单了 （升序）
        alist.sort((Apple o1,Apple o2) -> o1.getWeight().compareTo(o2.getWeight()));
        for (Apple apple : alist) {
            System.out.println(apple.getClass().toString() + "" + apple.getColor() + apple.getWeight());
        }
    }