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POSwing Timer with Graphics component
 

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  1. POSwing Timer with Graphics component
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    <p>I want to creat a circle in on a panel which appears and dissapears every 2 seconds. Here is that i have:</p> <pre><code>public class Board extends JPanel implements ActionListener { private final int DELAY = 2000; private Timer timer; /* * constructor */ public Board() { setFocusable(true); initGame(); } /* * initialize board */ public void initGame() { timer = new Timer(DELAY, this); timer.start(); } public void paint(Graphics g) { super.paint(g); g.setColor(Color.gray); // draw an oval starting at 20,20 with a width and height of 100 and // fill it g.drawOval(20, 20, 100, 100); g.fillOval(20, 20, 100, 100); g.dispose(); } @Override public void actionPerformed(ActionEvent e) { repaint(); } } </code></pre> <p>thank you guys. Now I wanna control my circle. But again something is wrong and it is not moving as I want.</p> <p>here are new methods:</p> <pre><code> private boolean left = false; private boolean right = true; private boolean up = false; private boolean down = false; private Timer timer; public int x = 20; public int y = 20; public int x2 = 100; public int y2 = 100; </code></pre> <p>...</p> <pre><code> public void paint(Graphics g) { super.paint(g); if (drawCircle) { g.setColor(Color.gray); // draw an oval starting at 20,20 with a width and height of 100 and // fill it g.drawOval(x, y, x2, y2); g.fillOval(x, y, x2, y2); } // removes native non-Java recourses g.dispose(); } public void move() { if (left) { x -= 5; } if (right) { x += 5; } if (up) { y -= 5; } if (down) { y += 5; } } @Override public void actionPerformed(ActionEvent e) { move(); repaint(); } private class TAdapter extends KeyAdapter { public void keyPressed(KeyEvent e) { int key = e.getKeyCode(); if ((key == KeyEvent.VK_LEFT) &amp;&amp; (!right)) { left = true; up = false; down = false; } if ((key == KeyEvent.VK_RIGHT) &amp;&amp; (!left)) { right = true; up = false; down = false; } if ((key == KeyEvent.VK_UP) &amp;&amp; (!down)) { up = true; right = false; left = false; } if ((key == KeyEvent.VK_DOWN) &amp;&amp; (!up)) { down = true; right = false; left = false; } } } </code></pre> <p>/<strong><em>*</em>**<em>*</em></strong>/ Solved , i just added </p> <pre><code>addKeyListener(new TAdapter()); </code></pre> <p>to my Board constructor!</p>
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    1. USalex
    1. USalex
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    1. COWhat's the question?
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      1. USMark Peters
    2. COin Swing, dont override paint, instead do override paintComponent
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      1. USkleopatra
 

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