Java: How can I get rid of a specific JPanel by clicking an arrow key?

Question

This is my inner class that creates the graphic text. I want to be able to press an arrow key and have it disappear. I'm sure it involves the remove method somehow, but I'm in over my head. Very new at this.

// STARTUP TEXT

class TextPanel extends JPanel implements KeyListener{

    // CONSTRUCTOR
    public TextPanel(){
        addKeyListener(this);
        setFocusable(true);
        setFocusTraversalKeysEnabled(false);
    }

    // PAINT METHOD
    public void paintComponent(Graphics g2){
        super.paintComponent(g2);
        g2.setColor(Color.WHITE);
        g2.fillRect(0, 0, this.getWidth(), this.getHeight());
        g2.setColor(Color.BLACK);
        g2.setFont(new Font("TimesRoman", Font.PLAIN, 14));
        g2.drawString("Press an arrow key to start", this.getWidth()/4, this.getHeight()/2);
    }

For better help sooner, post an [SSCCE](http://sscce.org/). – Andrew Thompson Jan 31 '12 at 05:44 — Andrew Thompson, Jan 31 '12 at 05:44

Harry Joy · Answer 1 · 2012-01-31T05:43:37.923

4

AFAIK You have to use Key Bindings to respond to arrow key then to remove panel (I think from frame) use either setVisible(false) of panel or remove(component) method of frame.

edited Jan 31 '12 at 05:43

answered Jan 31 '12 at 05:38

Harry Joy

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I figured that, but how would I do that? – Jazzertron Jan 31 '12 at 05:40
@Jazzertron read this: http://docs.oracle.com/javase/tutorial/uiswing/misc/keybinding.html – Harry Joy Jan 31 '12 at 05:44
@HarryJoy : Wish I could start a new Thread for this. But please tell me, what does the Abbreviation AFAIK stands for ? +1 for the KeyBinding stuff though. :-) Regards – nIcE cOw Jan 31 '12 at 07:22
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@GagandeepBali : AFAIK = *As Far As I Know.* ;p – Harry Joy Jan 31 '12 at 07:24
@HarryJoy : AFAIK, I never thought it's that easy :-) Thankyou. – nIcE cOw Jan 31 '12 at 07:42
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@GagandeepBali google is your friend as well: http://www.urbandictionary.com/define.php?term=afaik – kleopatra Jan 31 '12 at 10:22
@kleopatra : AFAIK, I completely forgot that thing also :-) LOL Regards – nIcE cOw Jan 31 '12 at 10:30

score 2 · Answer 2 · edited Jan 31 '12 at 07:36

2

/** Handle the key typed event  */
    public void keyTyped(KeyEvent e) {

    }

    /** Handle the key-pressed event  */
    public void keyPressed(KeyEvent e) {

    }

    /** Handle the key-released event  */
    public void keyReleased(KeyEvent e) {
    int key=e.getKeyCode();
        if(key==KeyEvent.VK_LEFT)
        {

            this.setVisible(false);

        }
        if(key==KeyEvent.VK_RIGHT)
        {

            this.setVisible(true);

        }

    }

edited Jan 31 '12 at 07:36

mKorbel

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answered Jan 31 '12 at 06:46

Prateek Sharma

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+1, though normally with Swing we don't use KeyEvent, they are meant to be used with AWT, but since it's a valuable information you had given, that's why :-) Regards – nIcE cOw Jan 31 '12 at 07:40

Java: How can I get rid of a specific JPanel by clicking an arrow key?

2 Answers2