Java 객체지향 배열 정보처리 예제에 대한 자세한 설명

package cn.bdqn.test3;

import java.util.Scanner;

public class Test1 {
public static void main(String[] args) {
//创建两个管理员对象
Admin a1 = new Admin();
a1.name = "admin1";
a1.pwd = "111111";

Admin a2 = new Admin();
a2.name = "admin2";
a2.pwd = "222222";

//将管理员对象放入数组 (对象数组)
Admin[] admins = {a1,a2}; 
//修改管理员密码
Scanner input = new Scanner(System.in);
System.out.println("请输入用户名：");
String name = input.next();
System.out.println("请输入密码：");
String pwd = input.next();
int index = -1;
for(int i=0;i<admins.length;i++){
if(admins[i].name.equals(name) && admins[i].pwd.equals(pwd)){
index = i;
break;
}
}
if(index>=0){
System.out.println("登录成功！");
System.out.println("请输入新密码：");
String newPwd = input.next();
admins[index].pwd = newPwd;
System.out.println("修改密码成功，您的新密码为："+admins[index].pwd);
}else{
System.out.println("用户名或密码错误！没有权限更新管理员信息");
}

}
}