Using keypad to move a circle at angles in java

Question

So I have an application that successfully moves a ball (ellipse) left, right, up, or down depending on which button of the keypad is being pressed. However, I\'m having tro

Answer 1

Change your KeyClickListener to and observe the magic! then checkout this http://zetcode.com/tutorials/javagamestutorial/movingsprites/

    class KeyClickListener implements KeyListener, Runnable
    {
        private boolean moveLeft, moveRight, moveUp, moveDown;
        private Thread runThread;
        public KeyClickListener() {
            moveLeft = moveRight = moveUp = moveDown = false;
            runThread = new Thread(this);
            runThread.start();
        } 
        public void keyPressed(KeyEvent e) {assessKeycodes(e, true);}
        public void keyReleased(KeyEvent e){assessKeycodes(e, false);}
        public void keyTyped(KeyEvent e){}

        private void assessKeycodes(KeyEvent e, boolean setTo) {
            switch(e.getKeyCode()) {
                case KeyEvent.VK_DOWN:
                    moveDown = setTo;
                    break;
                case KeyEvent.VK_UP:
                    moveDown = setTo;
                    break;
                case KeyEvent.VK_LEFT:
                    moveDown = setTo;
                    break;
                case KeyEvent.VK_RIGHT:
                    moveDown = setTo;
                    break;
            }
        }

        public void run() {
            while(true) {
                if (moveDown)
                        component.moveCircle(1);
                if (moveUp)
                        component.moveCircle(2);
                if (moveRight)
                        component.moveCircle(3);
                if (moveLeft)
                        component.moveCircle(5);
            }
        }
    }