I'm having an issue as I'm relatively new to GUI.
Basically to put everyone in the picture, I have a package which consists of:
MainClass
(Includes the GUI)So my MainClass
GUI is basically the controller.
However, I honestly have no clue how to go about it. Was told to have to create a constructor and use getters/setters? However I still don't understand how to call that specific class whilst leaving the other off "Turned off".
Thanks.
Well, there are quite a few ways to do this... Either you create anonymous listeners for each button, and then, depending on what you want to do, trigger methods in other classes or the like;
JButton b1 = new JButton();
b1.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
{
//Do something!
OtherClass other = new OtherClass();
other.myMethod();
}
});
JButton b2 = new JButton();
b2.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
{
//Do something else!
...
}
});
Alternatively, you use the command string and associate a unique command (made final, preferably) which you compare with when receiving a actionPerformed in a common listener implementation;
//In your class, somewhere...
public final static String CMD_PRESSED_B1 = "CMD_PRESSED_B1";
public final static String CMD_PRESSED_B2 = "CMD_PRESSED_B2";
//Create buttons
JButton b1 = new JButton();
JButton b2 = new JButton();
//Assign listeners, in this case "this", but it could be any instance implementing ActionListener, since the CMDs above are declared public static
b1.addActionListener(this);
b2.addActionListener(this);
//Assign the unique commands...
b1.setActionCommand(CMD_PRESSED_B1);
b2.setActionCommand(CMD_PRESSED_B2);
And then, in your listener implementation;
public void actionPerformed(ActionEvent e)
{
if (e.getActionCommand().equals(CMD_PRESSED_B1)
{
//Do something!
OtherClass other = new OtherClass();
other.myMethod();
}
else if (e.getActionCommand().equals(CMD_PRESSED_B2)
{
//Do something else!
...
}
}