Why doesn't this work?!?!?

Here again the whole program as it works for me. With every press to button the text changes from Thing1 to Thing2. Need some sleep now. CU and Good luck.

import java.awt.*;
import java.awt.event.*;

public class JF1 extends Panel implements ActionListener
{
    //~ Instance fields --------------------------------------------------------------------------------------------------------------------

    private Button m_switch;
    private Label  m_show;
    private int    m_type;

    //~ Constructors -----------------------------------------------------------------------------------------------------------------------

    public JF1(  )
    {
        setup(  );
        position(  );
    }

    //~ Methods ----------------------------------------------------------------------------------------------------------------------------

    public void setup(  )
    {
        m_switch = new Button( "Switch" );
        m_switch.addActionListener( this );
        m_show     = new Label( "Thing1" );
        m_type     = 0;
    }

    public void position(  )
    {
        removeAll(  );
        setLayout( new GridBagLayout(  ) );

        GridBagConstraints c = new GridBagConstraints(  );

        c.gridx      = 0;
        c.gridy      = 0;
        c.anchor     = GridBagConstraints.WEST;
        c.insets     = new Insets( 10, 30, 0, 0 );
        add( m_switch, c );

        c.gridx = 1;
        add( m_show, c );
    }

    public void actionPerformed( ActionEvent e )
    {
        if ( e.getSource(  ) == m_switch )
        {
            m_show.setText( ( m_type ^= 1 ) == 0 ? "Thing1" : "Thing2" );
        }
    }

    public static void main( String[] args )
    {
        Frame f = new Frame(  );
        f.setSize( 200, 200 );
        f.add( new JF1(  ) );
        f.setVisible( true );
    }
}