Re: Button event

jaap wrote:
Hello

I'm a real noob with java. I worked for 4 years with php but now I have to use java.
I'm looking for a clean way to get an action behind a button/menuitem. I already found the class actionListener. but the method actionpreformed is not very clean if you want to give 20 buttons an action. The way I know is 20 times else if. There must be an better method.

I will try to use my GUI like an interface. It does'nt have to include much code in my opinion. I think it have to be only some field and button delcarations.

thx for your help

greetz
Jaap

With you program just implement an ActionListener. After this you have to add the required actionPerformed method. Then just check for which buttons were selected. Here is an example code for buttons objects. Naturally this is not a complete program but just info you were asking about

public class MyButtons implements ActionListener
{
private JButton deleteButton;
private JButton reloadButton;
private JButton returnButton;
private JButton commitButton;

private final String TEXT_DETELE = "Delete";
private final String TEXT_RELOAD = "Reload";
private final String TEXT_RETURN = "Return";
private final String TEXT_COMMIT = "Commit";

private final String _Click = "Click this button to ";
private final String _toolTipDelete = this._Click + "Deleteed Se;ected quote from Database";
private final String _toolTipReload = this._Click + "Reload all remaintng dupicate Quotes from Database";
private final String _toolTipReturn = this._Click + "Return Insert Quotes";
private final String _toolTipCommit = this._Click + "Commit all Delete's to Database";


public MyButtons ()
{
deleteButton = buildButton (deleteButton, TEXT_DETELE, KeyEvent.VK_D, _toolTipDelete));
reloadButton = buildButton (reloadButton, TEXT_RELOAD, KeyEvent.VK_R, _toolTipReload));
returnButton = buildButton (returnButton, TEXT_RETURN, KeyEvent.VK_X, _toolTipReturn));
commitButton = buildButton (commitButton, TEXT_COMMIT, KeyEvent.VK_C, _toolTipCommit));
}

private JButton buildButton (JButton jButton, String label, int keyEvent, String toolTip)
{
jButton = new JButton(label);
jButton.setMnemonic (keyEvent);
jButton.addActionListener (this);
jButton.setActionCommand (label);
jButton.setToolTipText (toolTip);
return jButton;
}
public void actionPerformed (ActionEvent e)
{
if (this.TEXT_RETURN.equals (e.getActionCommand ()))
{
}
else if (this.TEXT_DETELE.equals (e.getActionCommand ()))
{
}
else if (this.TEXT_RELOAD.equals (e.getActionCommand ()))
{
}
else if (this.TEXT_COMMIT.equals (e.getActionCommand ()))
{
}

}
}

Thanks in Advance...
IchBin, Pocono Lake, Pa, USA http://weconsultants.phpnet.us
__________________________________________________________________________

'If there is one, Knowledge is the "Fountain of Youth"'
-William E. Taylor, Regular Guy (1952-)
.

Quantcast