Question

问题：由于某种原因，循环while (!input.equalsIgnoreCase(passWord))无法正常工作。即使密码不正确，执行也会直接转到另一个循环。如果有人可以帮助我，我将不胜感激。谢谢，谢谢。

public static void main(String[] args) {
    final int MAX_PLAYERS = 15 ;
    final int MIN_PLAYERS = 9 ;
    int players ;
    int teamSize ;
    int teams ;
    int leftOver ;
    String input ;

    String passWord = "PROSPERO" ;

    input = JOptionPane.showInputDialog(" What is the password please ?");
    passWord = String.valueOf(input);

    while (!input.equalsIgnoreCase(passWord))
    {
        input = JOptionPane.showInputDialog(" What is the password please ?");
        passWord = String.valueOf(input);
    }

    input = JOptionPane.showInputDialog("Enter the number of players per team :");
    teamSize = Integer.parseInt(input) ;

    while (teamSize < MIN_PLAYERS || teamSize > MAX_PLAYERS)
    {
        input = JOptionPane.showInputDialog("Sorry the minimum player" +
                " should be at least" + MIN_PLAYERS + " a maximum of " + MAX_PLAYERS) ;
        teamSize = Integer.parseInt(input) ;
    }

    input = JOptionPane.showInputDialog(" Enter the number of players :") ;
    players = Integer.parseInt(input) ;

    while ( players < 0 )
    {
        input = JOptionPane.showInputDialog(" Sorry the numbers of players should be greater than 0 . "
                + " Enter again a number : " ) ;
        players = Integer.parseInt(input) ;
    }
    teams = players / teamSize ;
    leftOver = players % teamSize ;

    JOptionPane.showMessageDialog(null, " There will be " + teams +
            "teams" + leftOver + " players leftover" + passWord);
}

Answer 1

您正在使用包含实际密码的相同变量String passWord = "PROSPERO" ; String inputPassword=""; inputPassword = JOptionPane.showInputDialog(" What is the password please ?"); while (!inputPassword.equalsIgnoreCase(passWord)) { inputPassword = JOptionPane.showInputDialog(" What is the password please ?"); }。下面的逻辑应该可以解决您的问题，

{{1}}

Answer 2

问题出在这里，因此您输入的密码等于密码。

input = JOptionPane.showInputDialog(" What is the password please ?");
passWord = String.valueOf(input);

您需要像这样修改它：

input = JOptionPane.showInputDialog(" What is the password please ?");
String inputPassWord = String.valueOf(input);

while (!inputPassWord.equalsIgnoreCase(passWord))
{
    input = JOptionPane.showInputDialog(" What is the password please ?");
    inputPassWord = String.valueOf(input);
}

我有关密码的第一个循环无法正常工作

2 个答案: