lambad表达式案例

 代码实现：

package 黑马程序员;

import java.util.Arrays;
import java.util.Comparator;

public class text {


    public static void main(String[] args) {

        girl gf1 = new girl(18, "aa", 1.67);
        girl gf2 = new girl(19, "bb", 1.7);
        girl gf3 = new girl(20, "cc", 1.8);
        girl[] girls={gf1,gf2,gf3};
        Arrays.sort(girls, ( o1,  o2) ->{
                double temp=o1.getAge()-o2.getAge();
                temp=temp==0?o1.getHeight()-o2.getHeight():temp;
                temp=temp==0?o1.getName().compareTo(o2.getName()):temp;
                if (temp>0){
                    return 1;
                }else if (temp<0){
                    return -1;

                } else {
                    return 0;
                }
            }
        );
        System.out.println(Arrays.toString(girls));
    }


    }
    class girl{
    private int age;
    private String name;
    private double height;

        public girl(int age,String name, double  height) {
            this.age = age;
            this.name = name;
            this.height = height;
        }

        public girl() {
        }

        public int getAge() {
            return age;
        }

        public void setAge(int age) {
            this.age = age;
        }

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public double getHeight() {
            return height;
        }

        public void setHeight(int height) {
            this.height = height;
        }
    }