用java语言编写的一个仿QQ登陆的界面，（4）　　当用户的账号或密码有任何一处未填写完整，则“登录”时显示“请将信息填写完整”，并设重新输入；当用户密码输入错误，“登录”时显示“密码有误”并设重新输入，这里假设账号为“147258369”，密码为“123555”。 成功登录时弹出“登录成功”的消息框。-Java language with an imitation QQ login interface, (4) When a user account or password to any one not completed, the " Login"　to display " Please fill in complete information" , and set re-enter　when the user password input error, " Login"　to display " password is incorrect"　and set to re-enter, this assumes that account for " 147258369" , password is " 123555."　Successful login pop-up " login successful"　message box.