public?class?Test?{
??
????public?static?void?main(String[]?args)?{??????
????????Scanner?sc=new?Scanner(System.in);
????????System.out.println("請輸入u的用戶名：");
????????String?x=sc.next();
?????????//如何輸入空的用戶名，按回車沒用，判定用戶名輸入為空？
????????User?u?=?new?User(x,?"123456");
????????User?u1?=?new?User("Mike",?"123456");
????????u.yhxx();
????????u1.yhxx();
????????System.out.println("===========================");
????????UserManager?um?=?new?UserManager();
????????um.checkUser(u,?u1);
????}
}????
?
????public?class?User?{
????private?String?user;
????private?String?password;
??
????public?void?yhxx()?{
????????System.out.println("用戶名："?+?getUser());
????????System.out.println("密碼："?+?getPassword());
????}
??
????public?User(String?user,?String?password)?{
????????this.user?=?user;
????????this.password?=?password;
????}
??
????public?String?getUser()?{
????????return?user;
????}
??
????public?void?setUser(String?user)?{
????????this.user?=?user;
????}
??
????public?String?getPassword()?{
????????return?password;
????}
??
????public?void?setPassword(String?password)?{
????????this.password?=?password;
????}
??
}
public?class?UserManager?{
????public?String?checkUser(User?u,?User?u1)?{
????????if?(u.getUser()?!=?null?&&?u1.getPassword()?!=?null)?{
????????????if?(u.getUser().equals(u1.getUser()))?{
????????????????System.out.println("用戶名一致");
????????????}?else?{
????????????????System.out.println("用戶名不一致");
????????????}
????????}?else?{
????????????System.out.println("用戶名輸入為空");
????????}
??
????????return?null;
??
????}
??
}
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