无法创建while / boolean循环

Question

我对Java不熟悉。 我试图创建一个while循环，将在每个过程之后提示用户； 关于他们是否希望继续。 我的进度看起来像这样。

    String proString,answer;
    char t,f,x;
    boolean exitTime;
    exitTime = false;
    proString = " Would You Like To Continue? \n";
    while(!exitTime) {
        continue;
    }
    answer = JOptionPane.showInputDialog(null," Would You Like To Continue? T/F ",HEADING,JOptionPane.INFORMATION_MESSAGE);
    x = char.parseChar(answer);

我也尝试了以下方法，但无济于事...

    Prompt= JOptonPane.showInputDialog(null,proString,HEADING,JOptionPane.QUESTION_MESSAGE); 
    input = char.parseChar(Prompt);
    if(input == "y") {
        break;
    }
    else if(input == "n") {
    }
    input = char.parseChar(Prompt);
    if(input != "y"||"n") {
        JOptionPane.showMessageDialog(null,"Invalid Input", "Error", JOptionPane.INFORMATION_MESSAGE);
    }
    else {
    }

我想我的问题归结为我应该使用JOptionPane.showInputDialog（...）还是JOptionPane.showConfirmDialog（...）或其他方法？ 请告诉我您将如何做。

Answer 1

您需要使用do-while循环：

//assume user does not want to continue.
boolean continue = false;
do
{
//process whatever you want

//ask the user
Prompt= JOptonPane.showInputDialog(null,proString,HEADING,JOptionPane.QUESTION_MESSAGE);
input = char.parseChar(Prompt);
//wait until you get a valid input
while(input != "y"||"n")
{
JOptionPane.showMessageDialog(null,"Invalid Input", "Error",JOptionPane.INFORMATION_MESSAGE);
Prompt= JOptonPane.showInputDialog(null,proString,HEADING,JOptionPane.QUESTION_MESSAGE); 
input = char.parseChar(Prompt);
}
//if user wants to continue, change your flag to true
if(input == "y") {
    continue = true;
}
//otherwise make it false
else if(input == "n") {
    continue = false;
}
while(continue); //if continue is true loop back

我没有测试过，但是它应该向您解释逻辑。