import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class ConverterFrame extends JFrame {

    private Converter converter = new Converter();        // Reference to app
    private JTextField inField = new JTextField(8);
    private JTextField outField = new JTextField(8);
    private JButton metersToInch;
    private JButton kgsToLbs;

    public ConverterFrame() {
        metersToInch = createJButton("Meters To Inches");
        kgsToLbs = createJButton("Kilos To Pounds");
       
        getContentPane().setLayout( new FlowLayout() );
        getContentPane().add(inField);
        getContentPane().add(outField);
        getContentPane().add(metersToInch);
        getContentPane().add(kgsToLbs);       
    }

    private JButton createJButton(String s) {      // A method to create a JButton
        JButton jbutton = new JButton(s);
      
        class ButtonListener implements ActionListener {  // Local class

            public void actionPerformed(ActionEvent e) {
                double inValue = Double.valueOf(inField.getText()).doubleValue();
                JButton button = (JButton) e.getSource();
                if (button.getText().equals("Meters To Inches")) 
                    outField.setText(""+ converter.new Distance().metersToInches(inValue)); 
                else
                    outField.setText(""+ converter.new Weight().kgsToPounds(inValue));          
            }
        } // ButtonListener
     
        ActionListener listener = new ButtonListener(); // Create a listener
        jbutton.addActionListener(listener);            // Register buttons with listener   
        return jbutton;  
    } // createJButton()
    
    public static void main(String args[]) {
        ConverterFrame frame = new ConverterFrame();
        frame.setSize(200,200);
        frame.setVisible(true);
    } // main()
} // ConverterFrame