为什么 while(true) 循环只运行一次 - Java
[英]Why does while(true) loop just run once - Java
问题描述
I read serveral similar questions but those answers couldnt help me with my problem: This is a while(true) loop for a tictactoe game and should run the whole time.
我阅读了几个类似的问题，但这些答案无法帮助我解决我的问题：这是一个 tictactoe 游戏的 while(true) 循环，应该一直运行。 But it only runs once I tested it EXCEPT I type a sysout somewhere in the loop...(not in one of the if statements):但它只在我测试后运行，除了我在循环中的某处键入一个 sysout ......（不是在 if 语句之一中）：
Doesn't work like this:不是这样工作的：
void winCheck() {
while(true) {
if(buttons[0].getValue() == 1 && buttons[1].getValue() == 1 && buttons[2].getValue() == 1) {
dispose();
JOptionPane.showMessageDialog(null, "Crosses win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
} else if(buttons[3].getValue() == 1 && buttons[4].getValue() == 1&& buttons[5].getValue() == 1) {
dispose();
JOptionPane.showMessageDialog(null, "Crosses win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
} else if(buttons[6].getValue() == 1 && buttons[7].getValue() == 1 && buttons[8].getValue() == 1) {
dispose();
JOptionPane.showMessageDialog(null, "Crosses win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
} else if(buttons[0].getValue() == 1 && buttons[3].getValue() == 1 && buttons[6].getValue() == 1 ) {
dispose();
JOptionPane.showMessageDialog(null, "Crosses win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
} else if(buttons[1].getValue() == 1 && buttons[4].getValue() == 1 && buttons[7].getValue() == 1) {
dispose();
JOptionPane.showMessageDialog(null, "Crosses win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
} else if(buttons[2].getValue() == 1 && buttons[5].getValue() == 1 && buttons[8].getValue() == 1 ) {
dispose();
JOptionPane.showMessageDialog(null, "Crosses win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
} else if(buttons[0].getValue() == 1 && buttons[4].getValue() == 1 && buttons[8].getValue() == 1) {
dispose();
JOptionPane.showMessageDialog(null, "Crosses win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
} else if(buttons[6].getValue() == 1 && buttons[4].getValue() == 1 && buttons[2].getValue() == 1 ) {
dispose();
JOptionPane.showMessageDialog(null, "Crosses win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
} else if(buttons[0].getValue() == 2 && buttons[1].getValue() == 2 && buttons[2].getValue() == 2) {
dispose();
JOptionPane.showMessageDialog(null, "Noughts win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
} else if(buttons[3].getValue() == 2 && buttons[4].getValue() == 2 && buttons[5].getValue() ==2 ) {
dispose();
JOptionPane.showMessageDialog(null, "Noughts win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
} else if(buttons[6].getValue() ==2 && buttons[7].getValue() == 2 && buttons[8].getValue() == 2) {
dispose();
JOptionPane.showMessageDialog(null, "Noughts win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
} else if(buttons[0].getValue() == 2 && buttons[3].getValue() == 2 && buttons[6].getValue() == 2 ) {
dispose();
JOptionPane.showMessageDialog(null, "Noughts win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
} else if(buttons[1].getValue() == 2 && buttons[4].getValue() == 2 && buttons[7].getValue() == 2 ) {
dispose();
JOptionPane.showMessageDialog(null, "Noughts win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
} else if(buttons[2].getValue() == 2 && buttons[5].getValue() == 2 && buttons[8].getValue() == 2 ) {
dispose();
JOptionPane.showMessageDialog(null, "Noughts win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
} else if(buttons[0].getValue() == 2 && buttons[4].getValue() == 2 && buttons[8].getValue() == 2 ) {
dispose();
JOptionPane.showMessageDialog(null, "Noughts win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
} else if(buttons[6].getValue() == 2 && buttons[4].getValue() == 2 && buttons[2].getValue() == 2) {
dispose();
JOptionPane.showMessageDialog(null, "Noughts win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
} else if(
(buttons[0].getValue() == 1 || buttons[0].getValue() == 2) &&
(buttons[1].getValue() == 1 || buttons[1].getValue() == 2) &&
(buttons[2].getValue() == 1 || buttons[2].getValue() == 2) &&
(buttons[3].getValue() == 1 || buttons[3].getValue() == 2) &&
(buttons[4].getValue() == 1 || buttons[4].getValue() == 2) &&
(buttons[5].getValue() == 1 || buttons[5].getValue() == 2) &&
(buttons[6].getValue() == 1 || buttons[6].getValue() == 2) &&
(buttons[7].getValue() == 1 || buttons[7].getValue() == 2) &&
(buttons[8].getValue() == 1 || buttons[8].getValue() == 2)) {
dispose();
JOptionPane.showMessageDialog(null, "Draw..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
}
}
}
but it works like this (sysout at the end) so it runs the whole time not just once :但它的工作原理是这样的（最后是 sysout），所以它会一直运行，而不仅仅是一次：
void winCheck() {
while(true) {
if(buttons[0].getValue() == 1 && buttons[1].getValue() == 1 && buttons[2].getValue() == 1) {
dispose();
JOptionPane.showMessageDialog(null, "Crosses win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
}
else if(buttons[3].getValue() == 1 && buttons[4].getValue() == 1&& buttons[5].getValue() == 1) {
dispose();
JOptionPane.showMessageDialog(null, "Crosses win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
}
else if(buttons[6].getValue() == 1 && buttons[7].getValue() == 1 && buttons[8].getValue() == 1) {
dispose();
JOptionPane.showMessageDialog(null, "Crosses win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
}
else if(buttons[0].getValue() == 1 && buttons[3].getValue() == 1 && buttons[6].getValue() == 1 ) {
dispose();
JOptionPane.showMessageDialog(null, "Crosses win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
}
else if(buttons[1].getValue() == 1 && buttons[4].getValue() == 1 && buttons[7].getValue() == 1) {
dispose();
JOptionPane.showMessageDialog(null, "Crosses win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
}
else if(buttons[2].getValue() == 1 && buttons[5].getValue() == 1 && buttons[8].getValue() == 1 ) {
dispose();
JOptionPane.showMessageDialog(null, "Crosses win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
}
else if(buttons[0].getValue() == 1 && buttons[4].getValue() == 1 && buttons[8].getValue() == 1) {
dispose();
JOptionPane.showMessageDialog(null, "Crosses win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
}
else if(buttons[6].getValue() == 1 && buttons[4].getValue() == 1 && buttons[2].getValue() == 1 ) {
dispose();
JOptionPane.showMessageDialog(null, "Crosses win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
}
else if(buttons[0].getValue() == 2 && buttons[1].getValue() == 2 && buttons[2].getValue() == 2) {
dispose();
JOptionPane.showMessageDialog(null, "Noughts win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
}
else if(buttons[3].getValue() == 2 && buttons[4].getValue() == 2 && buttons[5].getValue() ==2 ) {
dispose();
JOptionPane.showMessageDialog(null, "Noughts win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
}
else if(buttons[6].getValue() ==2 && buttons[7].getValue() == 2 && buttons[8].getValue() == 2) {
dispose();
JOptionPane.showMessageDialog(null, "Noughts win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
}
else if(buttons[0].getValue() == 2 && buttons[3].getValue() == 2 && buttons[6].getValue() == 2 ) {
dispose();
JOptionPane.showMessageDialog(null, "Noughts win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
}
else if(buttons[1].getValue() == 2 && buttons[4].getValue() == 2 && buttons[7].getValue() == 2 ) {
dispose();
JOptionPane.showMessageDialog(null, "Noughts win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
}
else if(buttons[2].getValue() == 2 && buttons[5].getValue() == 2 && buttons[8].getValue() == 2 ) {
dispose();
JOptionPane.showMessageDialog(null, "Noughts win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
}
else if(buttons[0].getValue() == 2 && buttons[4].getValue() == 2 && buttons[8].getValue() == 2 ) {
dispose();
JOptionPane.showMessageDialog(null, "Noughts win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
}
else if(buttons[6].getValue() == 2 && buttons[4].getValue() == 2 && buttons[2].getValue() == 2) {
dispose();
JOptionPane.showMessageDialog(null, "Noughts win..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
}
else if(
(buttons[0].getValue() == 1 || buttons[0].getValue() == 2) &&
(buttons[1].getValue() == 1 || buttons[1].getValue() == 2) &&
(buttons[2].getValue() == 1 || buttons[2].getValue() == 2) &&
(buttons[3].getValue() == 1 || buttons[3].getValue() == 2) &&
(buttons[4].getValue() == 1 || buttons[4].getValue() == 2) &&
(buttons[5].getValue() == 1 || buttons[5].getValue() == 2) &&
(buttons[6].getValue() == 1 || buttons[6].getValue() == 2) &&
(buttons[7].getValue() == 1 || buttons[7].getValue() == 2) &&
(buttons[8].getValue() == 1 || buttons[8].getValue() == 2)
)
{
dispose();
JOptionPane.showMessageDialog(null, "Draw..", "TicTacToe", JOptionPane.INFORMATION_MESSAGE);
Start.main(null);
}
System.out.println();
}
}
I just don't get why :/ Tried many things but didn't work.. Answer would be so cool..我只是不明白为什么：/尝试了很多东西但没有用..答案会很酷..
by the way even stranger: It works without System.out.println() in debug mode but not in normal mode or exported as jar...顺便说一句，更奇怪的是：它在调试模式下没有 System.out.println() 工作，但不在正常模式下或作为 jar 导出......
3 个解决方案
解决方案1
0 2016-04-15 21:52:20
You should check do you have winner every time when someone click on any JButtons (I thought on X and O buttons).每次有人单击任何 JButton 时，您都应该检查是否有赢家（我想到了 X 和 O 按钮）。
So you don't need while loop you can improve IF to be more simples.所以你不需要 while 循环，你可以将 IF 改进为更简单。
解决方案2
-1 2017-01-12 14:06:24
There may be some problem in your second class that ends the game.你的第二堂课可能有一些问题导致游戏结束。 A simple typo, most likely.一个简单的错字，很可能。 Might want to find a program such as BlueJ that has the capability to execute one class at a time.可能想要找到一个程序，例如 BlueJ，它能够一次执行一个类。
解决方案3
-4 2016-04-15 21:07:30
When you make it like this, the while() would run forever.当你这样做时，while() 将永远运行。 You should make a boolean and name it for example gameover.您应该创建一个布尔值并将其命名为例如 gameover。
boolean gameover = false;
while(!gameover){
//your gameloop
if(yourgameovercondition){
gameover = true;
}
}
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