I'm programming a game, but the keyListener doesn't work. Here is the source code:
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
public class InputHandler implements KeyListener{
public InputHandler(Game game) {
game.addKeyListener(this);
[code]....
My Question is: Why will it not say "up", if I press "w"?
I had a game written in a 500x400 window using JFrame and a threaded JPanel. It used KeyListener to detect user input and worked just fine, problem was it was very click dependent and therefore I wanted to put it into fullscreen mode so I would no longer come across the problem of clicking outside the window and being taken out of the game. But when I ported the game to Full Screen Exclusive Mode the KeyListener no longer seems to be working and I have no clue why. I tried using KeyBindings as well, that code didn't work and is left commented out in the FSEM code.Here is my code for the windowed application:
import java.awt.Container;
import javax.swing.*;
public class Main extends JFrame{
private GamePanel panel;
public Main(){
panel = new GamePanel();
[code]....
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");
for(int i = rows.size()-1; i >= 0; i--) {
if(rows.get(i).isEmpty()) {
g.drawImage(img, width,y,blockWidth, blockHeight, null);
}
}
}
As of right now it will only paste on the FIRST column not the rows.
I am trying to program a version of the "Worlds Hardest Game" using ready to program and applets for a final class project. Unfortunately I cannot figure out how to get my keylistener to work because I am using a loop for the enemies to go back and forth.
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class HardestGame extends Applet
implements KeyListener, MouseListener {
final int WIDTH = 400;
final int HEIGHT = 123;
int myX = 400;
int myY = 400;
[code]...
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;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
[Code] .....
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();
}
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]...
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.
I have a JMenuItem "Find" in the Edit Menu. I want to add a shortcut key to the JMenuItem.
For Find for example i want to use Ctrl + F
Here is my 'Action' for 'Find' which can be used via Edit->Find. It works.
Find = new AbstractAction(){
public void actionPerformed(ActionEvent e){
String word = JOptionPane.showInputDialog(new MainWindow(),"","Find",PLAIN_MESSAGE);
new WordSearcher(textArea,word);
}
};
WordSearcher() is a class i am using to search the word
Now i want to add a KeyListener for ctrl+F, for doing the same purpose. Even this one works.
private KeyListener k1 = new KeyAdapter()
{
public void keyPressed(KeyEvent e)
{
if(e.isControlDown())
{
if(e.getKeyCode()== KeyEvent.VK_F)
[Code] ....
But the problem here is i have to write the same code twice. Is there some way by which I can Use the already written Action Find in the KeyListener.
I Want to identify up, down, left and right keys with the keylistener() WHATE NAME DO I IDENTIFY IT WITH
View Replies View Related i can use this current code to change it so that it use TextArea in jsp and the keylistener code in servlet. i know i have to take out the JFrame,JTextfield and ContentPane but still i could not do it.
Servlet:
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.io.IOException;
[code]....
I'm trying to create a simple snake game, but I can't get my timer and keyListener to work...
//Timer
Timer tm = new Timer(5, this);
int x = 50, y = 250, vel = 2;
// The snake
g.setColor(Color.black);
g.fillRect(x, y, snakeSize, snakeSize);
[Code] .....
make the keylistener "listen" across the entire application? Currently whenever I've used it I have always attached it to something else, like a JTextField or the like. However that doesn't work all that well if I for example want to close down the current JDialog by pressing escape, because no object that has the keylistener attached to it is currently focused.
When I searched around for the answer if found similar questions on stackoverflow, but those seemed to focus on listening globally, even when the application itself is not focused, which isn't quite what I want.
Here is a simple piece of code that I'm currently experimenting with:
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.io.IOException;
import java.security.spec.InvalidKeySpecException;
[Code].....
It's supposed to simply create a frame and give me a message whenever I press the A or D buttons, as well as notify me whenever they are released. As of currently it obviously doesn't work because the keylistener hasn't been attached to anything, but that's also where I'm unsure of how to proceed.
I am trying to create the Breakout game and cannot figure how to get the paddle to move and make constraints to bricks disappear when the ball hits them but not the paddle. I tried this:
public void keyPressed(KeyEvent press)
{
obj = paddle;
int key = press.getKeyCode();
if(key == KeyEvent.VK_LEFT)
{
while(true)
{
paddle.move();
}
}
}
but I get an error for the "paddle.move();". Below is the entire code that I have gotten so far:
import acm.program.GraphicsProgram;
import acm.graphics.*;
import java.awt.Color;
import java.awt.event.*;
import acm.util.RandomGenerator;
[code]...
Why the keyTyped function isn't triggered, when i type a key?
Here is my code:
package main;
import java.awt.Component;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.ArrayList;
[Code] .....
I have noticed, that if i call setVisible(true) before i add the button, then it works, but the button is not displayed... How can i achieve that the button is displays AND the KeyListener works?
I wanted to try out using a KeyListener to read what key I press so it can paint a circle in my frame, but I can't get it to work?
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.Random;
[Code] ....
I am developing an application to share my client screen with server, it is working well on swing. But i want to develop as web application, i am trying to using applet. But i am facing the fallowing problem..,
1) The Applet screen also open and project also running well on server mechine. But unable to see the client screen on the server.
2) The problem may be to display the JDesktopPane or JInternalFrame.
My working Server Code extends withe JFrame..Java Code:
package remoteserver;
import java.awt.BorderLayout;
import java.awt.Container;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import javax.swing.JApplet;
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
[code]....
Why in my program keys are not working, what I forgot to write?
import javax.swing.JFrame;
public class Main {
public static void main(String args[]) {
JFrame frame = new JFrame("Stickman");
frame.setDefaultCloseOperation(frame.EXIT_ON_CLOSE);
frame.setSize(450, 490);
[code]....
I got my code into a jar, but when I run it I get his message:I just used Eclipse to make my jar and I thought I did it right but I guess not.
View Replies View RelatedI wrote a piece of code:
for(int i = 0; i < x; i++){
System.out.println("Enter students full name:");
sName[i] = result.fullName(sc.nextLine());
sExam[i] = result.examName("VB");
System.out.println("Enter students exam score:");
int scor = sc.nextInt();
sScore[i] = result.examScore(scor);
sGrade[i] = result.examGrade(scor);
}
When i run it i get:
Enter number of students:
1
Enter students full name:
Enter students exam score:
The problem is, i cant enter "full name", program is just jumping to the next step "exam score".
I am working on a fairly simple program where I have a colour change three times using the red green blue spectrum. The problem is that I keep getting a result of zero no matter what I do.
import java.awt.*;
class RectangleMain
{
public static void main (String[] args) {
ColouredRectangle blocky = new ColouredRectangle(50, 100, 20, 40, Color.red);
System.out.println(blocky.getColour());
blocky.mixColour(Color.blue);
[code]...
I'm having a problem where an if statement isn't working. In the Person class boolean olderThan ignores my if statement so it always returns false and I just don't get why that's happening.
import java.util.Calendar;
public class Person {
private String name;
private MyDate birthday;
public Person(String name, int pp, int kk, int vv) {
this.name = name;
[code].....
I have added a Simple Jar file in Eclipse Proect->BuildPath->jar file but class Inside that are not showing in My project this is my Project Structure and I have all ready checked in Order and Export..But jar file is not working.
View Replies View RelatedI am learning out design patterns and doing a little fun project on Model Control View (MCV). I got the concept down, it is pretty simple for the most part. However my buttons are not working.
Here is the code:
public class Controller
{
private Model model;
private View view;
Controller(Model model, View view) {
this.model = model;
this.view = view;
[code]....
It runs but nothing. My other questions is how can I make a box that will print the results.
I need to find out if one array list is a sub-sequence of another. The elements in the first list all need to be in the second list and must be in the same order. So s1<n, t, a> is a sub-sequence of s2<q, n, f, r, t, d, a>, but s1<a, a, t> is not a sub-sequence of s2<a, t, a>. I need to use iterators to go through each list, and I should only go through each list once (since it has to be in the same order) so nested loops don't seem like they would work because it would start at the beginning of one list every time it moved to another element in the outer loop's list.I seem to have an issue where the itr1. next()
is ignored when in an if statement.
My current code just stalls and will never stop running. I've also switched things around and put the not equal check after the if it is equal and it throws a NoSuchElementException.
import dataStructures.*;
public class Subsequence3
{
public static void main(String[] args)
{
ArrayList<Character> s1 = new ArrayList<Character>();
s1.add('n');
s1.add('p');
s1.add('a');
[code]....
the problem which im facing when executing jar file is it is not working same as when i run file using the IDE.When run jar file, it won't open the new frame even the user and pass combination correct.But when i'm compiling using the IDE, it works as charm. The main menu popped up after i logged in.I've tried Clean and Build and it's not working too.
View Replies View Related