作业1

package com.hspjava.Day01;public class Homework01 {//定义Person类{name,age,job},初始化Person对象数组，有3个person对象，并按照age从大到小进行排序public static void main(String[] args) {//初始化Person 对象数组，有3个person对象Person[] persons = new Person[3];persons[0]=new Person("jk",20,"java");persons[1]=new Person("javs",13,"C#");persons[2]=new Person("jah",18,"C++");//输出当前的对象数组for (int i = 0; i <persons.length ; i++) {System.out.println(persons[i]);//默认对象的.toString()}//使用冒泡排序Person tmp=null;//临时变量,用于交换;for(int i=0;i<persons.length-1;i++){//外层循环for (int j = 0; j <persons.length-1-i ; j++) {//按照age从大到小进行排序if(persons[i].getAge()<persons[i+1].getAge()){tmp=persons[i];persons[i]=persons[i+1];persons[i+1]=tmp;}//按照名字的长度从小到大
//                if (persons[i].getName().length()>persons[i+1].getName().length()){
//                    tmp=persons[i];
//                    persons[i]=persons[i+1];
//                    persons[i+1]=tmp;
//                }}}System.out.println("排序后的效果");for (int i = 0; i <persons.length ; i++) {System.out.println(persons[i]);//默认对象的.toString()}}}
class Person{private String name;private int age;private String job;public Person(String name,int age,String job){this.name=name;this.age=age;this.job=job;}public void setName(String name) {this.name = name;}public String getName() {return name;}public void setAge(){this.age=age;}public int getAge() {return age;}public  void setJob(){this.job=job;}public String getJob(){return job;}public String toString(){return "Person{"+"name='"+name+'\''+",age='"+age+",job='"+job+'\''+'}';}
}