Why does while(true) loop just run once - Java
Question
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. But it only runs once I tested it EXCEPT I type a sysout somewhere in the loop...(not in one of the if statements):
Doesn't work like this:
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 :
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..
by the way even stranger: It works without System.out.println() in debug mode but not in normal mode or exported as jar...
3 answers
solution1
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).
So you don't need while loop you can improve IF to be more simples.
solution2
-1 2017-01-12 14:06:24
There may be some problem in your second class that ends the game. A simple typo, most likely. Might want to find a program such as BlueJ that has the capability to execute one class at a time.
solution3
-4 2016-04-15 21:07:30
When you make it like this, the while() would run forever. You should make a boolean and name it for example gameover.
boolean gameover = false;
while(!gameover){
//your gameloop
if(yourgameovercondition){
gameover = true;
}
}
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