Add KeyListener To Thread

Feb 13, 2014

I want to try and run a thread that starts running on start and quits after pressing a key.I cant seem to detect keypresses. ci cant seem to add code: Post denied. New posts are limited by number of URLs it may contain and checked if it doesn't contain forbidden words.

its just a code snippit without links or anything..this is a small part... but how do i add a keyListener in here that listends to a random key?The class implements KeyListener and the overrided method "keyPressed" sets the isRunning boolean to false... but the keyPressed method is never executed.

public static void main(String[] args) {
Thread thread = new Thread() {
public void run() {
while(isRunning){
System.out.println("running");
try {
sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
};
thread.start();
}

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Accessing Keylistener From Thread

Mar 23, 2014

I start my thread, it's for a real basic game I'm learning. Everything was working fine, until I got to recognizing keys. It runs, and I can close using the mouse on the close command, but the keys aren't being generated from the keyboard. I copied it to a working sample, and here are the two files.

package testkeys;
import java.awt.Canvas;
import java.awt.Dimension;
import java.awt.image.BufferedImage;
import java.awt.image.DataBufferInt;
import javax.swing.JFrame;

[Code] ....

The idea was to set the return value to true if any key is pressed, thus quitting, for this short sample program. Problem, it never recognizes any keys pressed on the keyboard. New to java and threading.

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SwingDemo(){
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//rest of code
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I get the above, create a new instance of SwingDemo in the main thread which starts up the gui through the constructor. However, then the tutorial says that I should avoid doing the above but do this instead:

public class SwingDemo implements ActionListener {
SwingDemo(){
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Reading, it talks about an event-dispatching thread which has completely lost me... Why not just instantiate the object directly instead of creating another thread?

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[code]....

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I'm trying to add a KeyListener, but every time i do i have to implement methods that i will not use.

import javax.swing.*;
import java.awt.*;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
public class GameFrame extends JFrame implements KeyListener{
private GamePanel panel;
*/
public GameFrame()

[code]....

it works just concerned about the unimplemented methods.I'm supposed to make a row of images all the way across the screeen and down it unless the row contains the player. which is always at the bottom.

private void drawRow(int y, int blockWidth, int blockHeight, GameRow row, Graphics g) {
Image img = Toolkit.getDefaultToolkit().getImage("blocks.png");
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}
}
}

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I'm programming a game, but the keyListener doesn't work. Here is the source code:

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game.addKeyListener(this);

[code]....

My Question is: Why will it not say "up", if I press "w"?

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import java.applet.*;
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import java.awt.event.*;
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[code]...

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I wrote this program that makes a little square move around with the wasd keys. A huge problem that I had while creating it is adding the keylistener to my JFrame. In the end, I ended up creating an anonymous KeyListener class and adding that anonymous class to the JFrame. However, this anonymous class requires two other methods that I don't use, so any other thing I could have done to add these keylisteners to the JFrame without creating an anonymous class? I had to create 4...

Java Code:

import java.awt.BorderLayout;
import java.awt.Color;
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[Code] .....

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I am trying to make a program where a ball moves up continuously when you press space, then begins to move down when you reach a certain point. My method for this is to have a timer, and have a method that does this: When you press space, add 10 y coords every second (using a timer), and if you reach 470 y, then begin to drop 10 y coords. I made a method to hold the keylistener, and am running that method inside the actionPerformed method which is within another class. However, since it is a method, I cannot add my keylistener to my frame in the main method.

main
error line 9
Java Code: import javax.swing.*;
public class Main {

[code]...

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private KeyListener k1 = new KeyAdapter()
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[Code] ....

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Servlet:

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[code]....

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[code]....

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[Code].....

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[code]...

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[Code] .....

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