why isnt this working the JFrame is made and the paint is working but I can't get the keylistener to work. Ive tried to print something inside the keylistener but it did not show when left arrow was pressed.
import java.awt.event.KeyEvent;
public class movingsquare extends runpaintgui{
public void key(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_LEFT){
x = x - 5;
repaint();
System.out.println( x);
}
}
}
other class
import java.awt.Graphics;
import java.awt.event.KeyEvent;
import javax.swing.JFrame;
public class runpaintgui extends JFrame{
int x = 30;
public static void main(String[] args){
runpaintgui frame = new runpaintgui();
frame.setSize(1275, 775);
frame.setResizable(false);
frame.setTitle("game");
frame.setVisible(true);
}
public void paint(Graphics g){
super.paint(g);
g.fill3DRect(x, 30, 60, 60, true);
}
}
Change your code this way:
package de.swisslife.muellerj.test;
import java.awt.Graphics;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.JFrame;
public class runpaintgui extends JFrame implements KeyListener{
public runpaintgui(){
this.setSize(1275, 775);
this.setResizable(false);
this.setTitle("game");
this.setVisible(true);
this.addKeyListener(this);
this.setVisible(true);;
}
int x = 30;
public static void main(String[] args){
runpaintgui runpaintgui = new runpaintgui();
}
public void paint(Graphics g){
super.paint(g);
g.fill3DRect(x, 30, 60, 60, true);
}
public void keyTyped(KeyEvent e) {
// TODO Auto-generated method stub
}
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_LEFT){
x = x - 5;
repaint();
System.out.println( x);
}
}
public void keyReleased(KeyEvent e) {
// TODO Auto-generated method stub
}
}
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