getSource()

[Entertainer]

Alright, i thought i had figured out how i could track the source of a click through the getSource() method, but when i do this:

if(knop1)e.getSource()) //knop1 means button1
{
bla bla bla bla bla

the usual
}

alright, new error ^^

it says it can't find knop1

I'll post my code again

//THE VIEW
import javax.swing.Box;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JButton;
import javax.swing.JTextField;
import javax.swing.JLabel;
import javax.swing.BoxLayout;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.event.ActionListener;

/*
 * Created on Feb 23, 2005
 * @author R. Knijntje
 *
 *
 *
 * This code was designed by R. knijnenburg
 * Copyright @ R. Knijnenburg, http://entertainer.no-ip.com, Mondriaan onderwijsgroep
 */

public class RekenMachineView extends JFrame
{

    private JTextField invoer1, invoer2, uitkomst;
    public JButton knop1, knop2, knop3, knop4;
    
    public RekenMachineView()
    {
        init();
    }

    private void init()
	{
	    knop1 = new JButton("=");
	    knop2 = new JButton("-");
	    knop3 = new JButton("*");
	    knop4 = new JButton("/");

	    invoer1 = new JTextField();
	    invoer1.setBackground(Color.BLUE);
	    invoer1.setPreferredSize(new Dimension(150 , 30));
 
	    invoer2 = new JTextField();
	    invoer2.setBackground(Color.RED);
	    invoer2.setPreferredSize(new Dimension(150 , 30));
	    
	    uitkomst = new JTextField("0");
	    uitkomst.setBackground(Color.GREEN);
	    uitkomst.setPreferredSize(new Dimension(320 , 30));
	    uitkomst.setEditable(false);
	    
	    JPanel panelCenter = new JPanel();
	    JLabel label1 = new JLabel("+");
	    panelCenter.add(maakVerticalBox());
	    panelCenter.add(knop1);
	    panelCenter.add(knop2);
	    panelCenter.add(knop3);
	    panelCenter.add(knop4);

	    JPanel panelNoord = new JPanel();
	    panelNoord.add(invoer1);
	    panelNoord.add(label1);
	    panelNoord.add(invoer2);
	    	    
	    JPanel panelZuid = new JPanel();
	    panelZuid.add(uitkomst);

	    getContentPane().add(panelNoord,BorderLayout.NORTH);
	    getContentPane().add(panelZuid,BorderLayout.SOUTH);
	    getContentPane().add(panelCenter,BorderLayout.CENTER);

	    setTitle("Rekenmachine");
	    setIconImage(new ImageIcon("icon.jpg").getImage());
	    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	    pack();
	    setLocation(300,175);
	    //setSize(350, 175);
	    setVisible(true);
	}
    
    public static Box maakVerticalBox()
    {
        Box knopBox = new Box(BoxLayout.Y_AXIS);
        return knopBox;
    }
    
    public void setUitkomst(String uitkomst)
    {
    	this.uitkomst.setText(uitkomst);
    }
    
    public String geefInvoer1()
    {
        String waarde1 = invoer1.getText();
        return waarde1;
    }
     
    public String geefInvoer2()
    {
        String waarde2 = invoer2.getText();
        return waarde2;
    }
    
    public void toonResultaat(String uitkomst)
    {
        this.uitkomst.setText(uitkomst);
    }
    
    public void voegOptelLuisteraarToe(ActionListener e)
    {
        knop1.addActionListener(e);
        knop2.addActionListener(e);
        knop3.addActionListener(e);
        knop4.addActionListener(e);	
    }
}

--------------------------------------------------------------------------
//THE STARTER

import javax.swing.JFrame;

/*
 * Created on Feb 23, 2005
 * @author R. Knijntje
 *
 *
 *
 * This code was designed by R. knijnenburg
 * Copyright @ R. Knijnenburg, http://entertainer.no-ip.com, Mondriaan onderwijsgroep
 */

public class RekenMachineStarter 
{
    public static void main(String[] args) 
    {
        JFrame.setDefaultLookAndFeelDecorated(true);
        RekenMachineView mijnView = new RekenMachineView();
        RekenMachineModel mijnModel = new RekenMachineModel();
        RekenMachineValidator mijnValidator = new RekenMachineValidator();
        
		RekenMachineLuisteraar e = new RekenMachineLuisteraar(mijnModel, mijnView);

		mijnView.voegOptelLuisteraarToe(e);
    }
}

-------------------------------------------------------------------------
// THE LISTENER
import java.awt.event.*;

/*
/*
 * Created on Feb 23, 2005
 * @author R. Knijntje
 *
 *
 *
 * This code was designed by R. knijnenburg
 * Copyright @ R. Knijnenburg, http://entertainer.no-ip.com, Mondriaan onderwijsgroep
 */

public class RekenMachineLuisteraar implements ActionListener
{
    
	private RekenMachineModel m;
	private RekenMachineView v;
	private RekenMachineValidator rmv;
	
	public RekenMachineLuisteraar(RekenMachineModel m , RekenMachineView v)
    {
    	this.m = m;
        this.v = v;
        
        rmv = new RekenMachineValidator();
    }
	
	public void actionPerformed(ActionEvent e)
    {
        String stringGetal1, stringGetal2;
    	int intGetal1, intGetal2;;
        
    	stringGetal1 = v.geefInvoer1();  	
    	rmv.setInvoer(stringGetal1);
  
    	if(rmv.isCorrect())
       	{   
    	    if((knop1)e.getSource())
    	    {
	       		intGetal1 = Integer.parseInt(stringGetal1);   		
	       		
	       		stringGetal2 = v.geefInvoer2();
	       		rmv.setInvoer(stringGetal2);
	                        
	            if(rmv.isCorrect())
	           	{   
	            	intGetal2 = Integer.parseInt(stringGetal2); 
	           		m.setGetal1(intGetal1);
	           		m.setGetal2(intGetal2);
	           		v.toonResultaat(Integer.toString(m.geefOptelling()));
	            }
    	    }
    	    
        	if(rmv.isCorrect())
           	{   
        	    if((knop2)e.getSource())
        	    {
    	       		intGetal1 = Integer.parseInt(stringGetal1);   		
    	       		
    	       		stringGetal2 = v.geefInvoer2();
    	       		rmv.setInvoer(stringGetal2);
    	                        
    	            if(rmv.isCorrect())
    	           	{   
    	            	intGetal2 = Integer.parseInt(stringGetal2); 
    	           		m.setGetal1(intGetal1);
    	           		m.setGetal2(intGetal2);
    	           		v.toonResultaat(Integer.toString(m.geefAftrekking()));
    	            }
        	    }

           	else
           	{
           		v.toonResultaat(rmv.toString());
           	}
        }
       	else
       	{
       		v.toonResultaat(rmv.toString());
       	}

    }

 /*   
	class aftrekScenario implements ActionListener
	{      
    
	    public void actionPerformed(ActionEvent a)
	    {
	        String stringGetal1, stringGetal2;
	        int intGetal1, intGetal2;
	        
	        stringGetal1 = v.geefInvoer1();  	
	        rmv.setInvoer(stringGetal1);
    	
	        if(rmv.isCorrect()
	        {   			        
	        	if(knop2.isPressed == true)
	        		{
		            intGetal1 = Integer.parseInt(stringGetal1);   		
	       		
		            stringGetal2 = v.geefInvoer2();
		            rmv.setInvoer(stringGetal2);
		            
		            if(rmv.isCorrect())
		            {   
		                intGetal2 = Integer.parseInt(stringGetal2); 
		                m.setGetal1(intGetal1);
		                m.setGetal2(intGetal2);
		                v.toonResultaat(Integer.toString(m.geefAftrekking()));
		            }
		        }
               	else
               	{
               		v.toonResultaat(rmv.toString());
               	}
            }
	        
           	else
           	{
           		v.toonResultaat(rmv.toString());
           	}

	    }    
  	}
}		
}

Could you guys help me, i'm starting to get depressed.....

[buntine]

It works a little different than that.

if (e.getSource typeof JButton)
{
   // A JButton was clicked.
}

This will resolve to true if a JButton was clicked. You can then use something like getText() to determine which button was pressed. Or you do something like this to actually get the button.

JButton btnClicked = (JButton)e.getSource();

Regards.