外部比较器

外部比较器

1. 创建属性，比较方法；这里用到泛化

           package com.DemoTest1;
   
           import com.Collection.Compare;
   
           import java.util.Comparator;
   
           public class Test02 {
               private String name;
               private int age;
               private double hight;
   
               public Test02(String name, int age, double hight) {
                   this.name = name;
                   this.age = age;
                   this.hight = hight;
               }
   
               public String getName() {
                   return name;
               }
   
               public void setName(String name) {
                   this.name = name;
               }
   
               public int getAge() {
                   return age;
               }
   
               public void setAge(int age) {
                   this.age = age;
               }
   
               public double getHight() {
                   return hight;
               }
   
               public void setHight(double hight) {
                   this.hight = hight;
               }
   
               @Override
               public String toString() {
                   return "Test02{" +
                           "name='" + name + '\'' +
                           ", age=" + age +
                           ", hight=" + hight +
                           '}';
               }
   
           }
   
           class Test03 extends Compare implements Comparator<Test02> {
   
   
               @Override
               public int compare(Test02 o1, Test02 o2) {
                   return o1.getAge()-o2.getAge();
               }
               public int compare02(Test02 o1, Test02 o2) {
                   return ((Double)o1.getHight()).compareTo((Double)o2.getHight());
               }
           }
   
   

2. 对比较器Compare 进行调用

3.         package com.DemoTest1;
   
           public class Test01 {
               public static void main(String[] args) {
                   Test02 test02 =new Test02("白白",21,168.2);
                   Test02 test021 =new Test02("红花",25,180.2);
                   Test03 test022 = new Test03();
                   System.out.println(test022.compare(test02, test021));
                   System.out.println(test022.compare02(test02, test021));
               }
           }