我的&&逻辑运算符将不起作用,并且始终返回false并将第二个条件返回为true。但这对于||确实有效操作员。我在做什么错了?
我尝试使用||运算符,它工作正常,但我想使用&&运算符
@FXML
private void loginFunction() throws IOException {
String username = this.username.getText();
String password = this.username.getText();
if (username.equals("username") && password.equals("password")) {
// This Code is used to alert the user of any information in case the username
// and password is all correct
Alert alert2 = new Alert(Alert.AlertType.CONFIRMATION);
alert2.setHeaderText("Login Successful");
alert2.setTitle("Welcome");
alert2.setContentText("Pleae Wait. You shall be redirected soon.");
alert2.show();
} else {
Alert alert3 = new Alert(Alert.AlertType.WARNING);
alert3.setTitle("Intruder Found");
alert3.setContentText("Either your username or password is incorrect. Please try again.");
alert3.setHeaderText("Enter the Right Details");
alert3.show();
return;
}
}
我希望第一个条件返回为true,但事实并非如此。 ||并非如此运算符。
答案 0 :(得分:6)
好吧
String username = this.username.getText();
String password = this. username.getText();
表示您的两个字段相同。更改它,
String username = this.username.getText();
String password = this.password.getText();
因为username
中的文本不能同时同时“用户名”和“密码”。
答案 1 :(得分:0)
更改
String password = this.username.getText();
为
String password = this.password.getText();