keyReleased function not restoring original Background color in java

Question

When I press a key for some time, the background color of the key doesn't restore to original color in keyReleased function.What am I doing wrong. If you could redirect me to some site contain tutorial on how to make programs like this with examples, it will be very helpful. Here is the code:

public void keyPressed(KeyEvent event)
    {
        int code= event.getKeyCode();
        String x,h;

        for(int i=0;i<names.length;i++)
        {
            s=names[i];
            x=s.trim();

            if(x.contentEquals(event.getKeyText(code)) )
            {
                backColor=but[i].getBackground();
                but[i].setBackground(Color.RED);
                break;
            }
        }
        switch(event.getKeyCode())
        {
        case KeyEvent.VK_BACK_SLASH:
            h=" \\ ";
            for(int i=0;i<but.length;i++)
            {
                if(h.contentEquals(but[i].getText()))
                {
                    backColor=but[i].getBackground();
                    but[i].setBackground(Color.RED);
                    buttonIndex=i;
                    break;
                }
            }
            break;
    }
public void keyReleased(KeyEvent event)
    {
        String x;
        int code= event.getKeyCode();

        for(int i=0;i<names.length;i++)
        {
            s=names[i];
            x=s.trim();

            if(x.contentEquals(event.getKeyText(code)) && !s.contentEquals("                             "))
            {System.out.println("outside");
                but[i].setBackground(backColor);
                break;
            }
            else
                if(s.contentEquals("                             "))
                {
                    but[buttonIndex].setBackground(backColor);
                }
        }
    }

please this question is about, (deepest coded in Navajo) question on this week, — mKorbel, Nov 17 '12 at 09:01

score 2 · Accepted Answer · edited May 23 '17 at 11:43

2

don't use Keylistener for Swing JComponents, use KeyBindings instead
your JFrame, JPanel, JComponent must be focusable (setFocusable)
in one moment only one of JComponent can be focusable, then your program will be focus_hunter this not caused by using KeyBindings
for better help sooner post an SSCCE, short, runnable, compilable

edited May 23 '17 at 11:43

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answered Nov 17 '12 at 09:05

mKorbel

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keyReleased function not restoring original Background color in java

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