Question

我在测试环境中有以下方法，我正在尝试附加变量count“loginAttempts” 到JOptionPane窗口，以便用户知道到目前为止他们有多少次失败的登录尝试。基本上，如果可能的话，我想将另一个字符串和变量连接到此行。

JOptionPane.showMessageDialog(null, "Enter a valid username and a password. You've had ||loginAttempts|| "failed login attempts", "Error", JOptionPane.ERROR_MESSAGE);


Here's the method out of the application" 

private void loginButton(java.awt.event.ActionEvent evt) {                             
    username = userName.getText();
    password = userPassword.getText();
    if (username.equals(finalusername) && password.equals(finalpassword) && loginAttempts <= 3) {
        loginSuccess = true;
    } else {
        loginSuccess = false;
        loginAttempts = loginAttempts + 1;
    }
    if (loginSuccess) {
        JOptionPane.showMessageDialog(null, "You have successfully logged in", "Success", JOptionPane.DEFAULT_OPTION);
    } else if (loginAttempts > 3) {
        JOptionPane.showMessageDialog(null, "You have had 3 failed login attempt, your account has been locked","Locked", JOptionPane.ERROR_MESSAGE);
    } else if (!loginSuccess) {
        JOptionPane.showMessageDialog(null, "Enter a valid username and a password", "Error", JOptionPane.ERROR_MESSAGE);
    }
}

Answer 1

你可以用这种方式连接（用其替换最后一个）：

    } else if (!loginSuccess) {
        JOptionPane.showMessageDialog(null, "Enter a valid username and a password, Number of attempts : "+loginAttempts , "Error", JOptionPane.ERROR_MESSAGE);
    }

在JOptionPane窗口中连接字符串和变量

1 个答案: