Question

如题，求助大神

创建一个user封装类，含有username，pwd，先创建3个对象，并初始化。模拟登陆，如果账号正确，输出welcome +用户名，要求user初始化之后，放入list。登陆时要遍历list查找

Answer 1

public class User{

private String username = "";
private String pwd = "";

/**
* @return the username
*/
public String getUsername() {
return username;
}

/**
* @param username the username to set
*/
public void setUsername(String username) {
this.username = username;
}

/**
* @return the pwd
*/
public String getPwd() {
return pwd;
}

/**
* @param pwd the pwd to set
*/
public void setPwd(String pwd) {
this.pwd = pwd;
}
}

以上是封装的类，剩下的你描述的有点不清楚，看不懂

Answer 2

public class Test {
public static void main(String[] args) throws Exception {
List<User> list = new ArrayList<User>();
User u;
for (int i = 0; i < 3; i++) {
u = new User();
u.setUsername("user_" + i);
u.setPwd("pwd_" + i);
list.add(u);
}
String name = "user_2";// 用户名
String pwd = "pwd_2";// 密码
for (User uu : list) {
if (name.equals(uu.getUsername()) && pwd.equals(uu.getPwd())) {
System.out.println("登录成功");
System.exit(0);
}
}
System.out.println("登录失败");
}
}
class User {
String username;
String pwd;
// 提供get()和set()
}