homework4

实现注册、登录功能。
某用户先注册，注册信息包括用户名、密码、个人格言。
然后使用注册的信息登录，如果登录成功，则显示个人信息；
否则显示“登录失败”。

package homework4;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.Scanner;

public class Test {

	public static void main(String[] args) {
	Scanner scanner=new Scanner(System.in);
	Collection<Registe> collection=new ArrayList<Registe>();
	int choice=0;
	do {
		System.out.println("**********注册**********");
		System.out.println("**********登陆**********");
		System.out.println("**********退出**********");
		System.out.println("请选择(0,1或2):");
		choice=scanner.nextInt();	
		if(choice==1){
			Registe registe=new Registe();
			System.out.print("请输入用户名:");
			registe.setUserName(scanner.next());
			System.out.print("请输入密码:");
			registe.setPassword(scanner.next());
			System.out.print("请输入人生格言:");
			registe.setWord(scanner.next());
			collection=Registe.add(registe);
		}else if(choice==2){
			System.out.print("请输入用户名:");
			String userName=scanner.next();
			System.out.println("请输入密码:");
			String password=scanner.next();
			Iterator<Registe> iterator=collection.iterator();
			while (iterator.hasNext()) {
				Registe registe=iterator.next();
				if(registe.getUserName().equals(userName) && registe.getPassword().equals(password)){
					System.out.println("登陆成功");
					System.out.println("用户名:"+userName+ " 密码:"+password+" 人生格言:"+registe.getWord());
					break;
				}
				else {
					System.out.println("登陆失败!!!");
				}
			}
			
			
		}
		else if (choice==0) {
			System.exit(0);
		}
		else {
			System.out.println("输入错误");
		}
	} while (choice!=0);
	
	
		
	}

}

package homework4;

import java.util.ArrayList;
import java.util.Collection;

public class Registe {
	private String userName;
	private String password;
	private String word;
	public Registe(String userName, String password, String word) {
		this.userName = userName;
		this.password = password;
		this.word = word;
	}
	public Registe() {
	}
	public String getUserName() {
		return userName;
	}
	public void setUserName(String userName) {
		this.userName = userName;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	public String getWord() {
		return word;
	}
	public void setWord(String word) {
		this.word = word;
	}
	public static Collection<Registe> add(Registe registe){
		Collection<Registe> collection=new ArrayList<Registe>();
		collection.add(registe);
		return collection;
				
	}
	
	

}