Thread: Fire an event with a custom component in java

hi, i'm making custom component(it's jpanel squares draw @ hand), don't know how launch actionevent there.
example(my english not good):
custom component names gridcard.
if made simple gui program jpanel called panel1 , do:
panel1.add(button1) //a generic button.
panel1.add(text1) //a generic text box/label, doesn't mind.
panel1.add(grid1) //an instance of custom component gridcard.

when put next code:
public void actionperformed(actionevent e)
{

if (e.getsource() == button1)
{
text1.settext("hi");
}
else if (e.getsource() == grid1)
{
text1.settext("goodbye");
}
}

when click in button(or press space when focus in button), actionperformed launched. how do code works(that actionperformed launched when click in grid1)?, thanks.

consider defining gridcard subclass of abstractbutton.

code:

import javax.swing.*; import java.awt.event.*;  class gridcard extends abstractbutton {    ... }   public class myclass extends jframe implements actionlistener {    public myclass()    {       jpanel   panel = new jpanel();       gridcard gc    = new gridcard();        gc.addactionlistener(this);        panel.add(gc);        // ...    }     public void actionperformed(actionevent event)    {       ...    } }

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