Java Interface as problems

Question

Hi this code for java i am having major problems. I am a newbie to java so please be kind and hope in the feature i can master java and then help to each others. I will include the show GUI class later.
My main problem is how to assign events to the button so that it preforms a calculation.
Second what should make my GUI run properly and what actions do i need to take.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class ConvertValues extends JPanel {
public class ConvertValues {
     JFrame window;
     JComboBox inputcombo,outputcombo;
     JRadioButton Length,Mass,Volume,Temperature;
     JButton = new JButton("Convert");
     JTextField outputtext, inputtext;
     public ConvertValues(){
          window = new JFrame("Imperial to Metric Converter");
          window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          window.setSize(600,600);
          window.setVisible(true);
          addRadioButtons();
          addComboBox();     
          public void addPanel(){
          Public JPanel getPanel();
          JPanel wrapper = new JPanel();
          wrapper.setLayout(new BorderLayout());
          wrapper.setBorder(BorderFactory.createEmptyBorder(13,13,13,13));
          JPanel centre = new JPanel ();
          centre.setLayout(new GridLayout(2,2));
          public void addRadiobButton(){
          JRadioButton RadioButton = new JRadioButton();
          JPanel rbut = new JPanel();
          rbut1.setLayout(new GridLayout(4,4));
          JPanel panel1 = new JPanel();
          JLabel metric = new JLabel (" Length Metric Values")
          panel1.add(metric);
          rbut1.add (panel1);
          JPanel panel2 = new JPanel();
          JTextField text1 = new JTextField (13);
          panel2.add(text1);
          rbut1.add(panel2);
          JPanel panel3 = new JPanel();
          JLabel imperial = new JLabel ("Length Imperial Values")
          panel3.add(Imperial);
          rbut1.add (panel3);
          JPanel panel4 = new JPanel();
          JTextField text2 = new JTextField (13);
          panel4.add(text2);
          rbut1.add(panel4);
          JPanel rbut2 = new JPanel();
          rbut2.setLayout(new GridLayout (4,4));
          JPanel panel5 = new JPanel ();
          JLabel metric2 = new JLabel ("Liquid Metric Values");
          panel5.add(metric2)
          rbut2.add(panel5);
          JPanel panel6 = new JPanel ();
          JTextField text3 = new JTextField (13);
          panel6.add(text3);
          rbut2.add(panel6);
          JPanel panel7 = new JPanel ();
          JLabel imperial2 = new JLabel ("Liquid Imperial Values");
          panel5.add(imperial2)
          rbut2.add(pane7);
          JPanel panel8 = new JPanel ();
          JTextField text4 = new JTextField (13);
          panel8.add(text4);
          rbut2.add(panel8);
          JPanel rbut3 = new JPanel();
          rbut3.setLayout(new GridLayout (4,4));
          JPanel panel9 = new JPanel ();
          JLabel metric3 = new JLabel (" Mass Metric Values");
          panel9.add(metric3)
          rbut3.add(panel9);
          JPanel panel10 = new JPanel ();
          JTextField text5 = new JTextField (13);
          panel10.add(text5);
          rbut3.add(panel10);
          JPanel panel11 = new JPanel ();
          JLabel imperial3 = new JLabel ("Mass Imperial Values");
          panel11.add(imperial3)
          rbut3.add(pane11);
          JPanel panel12 = new JPanel ();
          JTextField text6 = new JTextField (13);
          panel12.add(text6);
          rbut3.add(panel12);
          JPanel rbut4 = new JPanel();
          rbut4.setLayout(new GridLayout (4,4));
          JPanel panel13 = new JPanel ();
          JLabel metric4 = new JLabel (" Temperature Metric Values");
          panel13.add(metric4)
          rbut4.add(panel13);
          JPanel panel14 = new JPanel ();
          JTextField text6 = new JTextField (13);
          panel14.add(text6);
          rbut4.add(panel14);
          JPanel panel15 = new JPanel ();
          JLabel imperial4 = new JLabel ("Temperature Imperial Values");
          panel15.add(imperial4)
          rbut4.add(pane15);
          JPanel panel16 = new JPanel ();
          JTextField text7 = new JTextField (13);
          panel16.add(text7);
          rbut4.add(panel16);
          radiopanel.add("Length","rbut1")
          radiopanel.add("Liquid Mass","rbut2")
          radiopanel.add("Mass","rbut3")
          radiopanel.add("Temperature","rbut4")
          public void addComboBox(){
          JPanel panel17 = new JPanel();
          String[] str = {"Milliimeters", "Centimeters", "Meters", "Kilometers"};
          JComboBox metricvalues = newJComboBox(str);
          panel17.add(metricvalues);
          rbut1.add(panel17);
          JPanel panel18 = new JPanel();
          String[] str2 = {"Inch", "Foot", "Yard", "Mile"};
          JComboBox imperialvalues = newJComboBox(str2);
          panel18.add(imperialvalues);
          rbut1.add(panel18);
          JPanel panel19 = new JPanel();
          String[] str3 = {"Litres", "Millilitres", "Litres"};
          JComboBox metricvalues = newJComboBox(str3);
          panel19.add(metricvalues);
          rbut2.add(panel19);
          JPanel panel20 = new JPanel();
          String[] str4 = {"Fluid", "Ounce", "Pint", "Quart", "Gallon"};
          JComboBox imperialvalues = newJComboBox(str4);
          panel20.add(imperialvalues);
          rbut2.add(panel20);
          JPanel panel21 = new JPanel();
          String[] str5 = {"Grammes", "Kilogrammes", "Metric Tonne"};
          JComboBox metricvalues = newJComboBox(str5);
          panel21.add(metricvalues);
          rbut3.add(panel21);
          JPanel panel22 = new JPanel();
          String[] str6 = {"Ounce", "Pound", "Stone", "Long Ton"};
          JComboBox imperialvalues = newJComboBox(str6);
          panel22.add(imperialvalues);
          rbut3.add(panel22);
          JPanel panel23 = new JPanel();
          String[] str6 = {"Grammes", "Kilogrammes", "Metric Tonne"};
          JComboBox metricvalues = newJComboBox(str6);
          panel23.add(metricvalues);
          rbut4.add(panel23);
          JPanel panel24 = new JPanel();
          String[] str7 = {"Ounce", "Pound", "Stone", "Long Ton"};
          JComboBox imperialvalues = newJComboBox(str7);
          panel24.add(imperialvalues);
          rbut4.add(panel24);
          frame.getContentPane().add(center, BorderLayout.CENTER);
          public void addLabelandtext();{
          inputlabel = new JLabel("Enter Value");
          valuelabel = new JLabel("0");
          metricLabel = new JLabel ("Metric Value");
          imperial value = new JLabel("Imperial Value");
          outputtext = new JTextField(8);
          inputtext = new JTextField (8);
          JPanel labelpanel = new JPanel();
          labelpanel.add(inputlabel);
          labelpanel.add(mJPanel panel25 = new JPanel();
          labelpanel.add(imperiallabel);
          labelpanel.add(valuelabel);
          labelpanel.add(outputtext);
          labelpanel.add(inputtext);
          JPanel top = new JPanel(new GridLayout(5,3));
          middle.add(labelpanel);
          frame.getContentPane().add(middle,BorderLayout.SOUTH);
          public void ConvertButton();{
               JPanel panel25 = new JPanel();
               JButton convert = new JButton ("CONVERT");
               Convert.addActionListener(this);
               panel25.add(convert);
               rbut1.add(panel 25));
               JPanel panel26 = new JPanel();
               JButton convert = new JButton ("CONVERT");
               Convert.addActionListener(this);
               panel26.add(convert);
               rbut2.add(panel 26));
               JPanel panel27 = new JPanel();
               JButton convert = new JButton ("CONVERT");
               Convert.addActionListener(this);
               panel27.add(convert);
               rbut3.add(panel 27));
               JPanel panel28 = new JPanel();
               JButton convert = new JButton ("CONVERT");
               Convert.addActionListener(this);
               panel28.add(convert);
               rbut4.add(panel 28));
          public void LengthConverter();{
          Let measurement = TextIO.getDouble()
          Let units = TextIO.getlnword();
          if the units are inches
               Let inches = measurement
          else if the units are milimeters
               Let inches = measurement*25.4
          else if the units are Foot
               Let centirmeter = measurement*30.48
          else if the units are Yard
               Let meter = measurement*0.9144
          else if the units are mile
               let kilometers = measurement*1.609
          else if the unit are meters
               let centimeters = measurement*100
          else
               The units are wrong!
               Print an error message and stop processing
          let milimeter = inches/25.4
          let foot = centimeters/30.48
          let Yard = meter/0.9144
          let mile = kilometers/1.609
          let meter = centimeter/100
          dispay the results
          public void VolumeConverter();{
               Let measurement = TextIO.getDouble()
          Let units = TextIO.getlnword();
          if the units are Fluid Ounce
               Let Fluid Ounce = measurement
          else if the units are mililitres
               Let Fluid Ounce = measurement*28.41
          else if the units are Pint
               Let Litres = measurement*0.568
          else if the units are Quart
               Let Litres = measurement*1.14
          else if the units are Gallon
               let litres = measurement*4.54
          else if the unit are litres
               let centilitres = measurement*100
          else
               The units are wrong!
               Print an error message and stop processing
          let mililitres = Fluid Ounce/28.4
          let Pint = Litres/0.568
          let Quart = Litre/1.14
          let Gallon = Litres/4.54
          let litre = centilitre/100
          dispay the results
          public void WeightConverter();{
               Let measurement = TextIO.getDouble()
          Let units = TextIO.getlnword();
          if the units are Ounce
               Let Ounce = measurement
          else if the units are Grammes
               Let Ounce = measurement*28.35
          else if the units are Pound
               Let kilograms = measurement*0.4536
          else if the units are Stone
               Let Kilogrammes = measurement*6.3503
          else if the units are Longton
               let metric tonne = measurement*1.016
          else if the unit are Gramme
               let Killogram = measurement*100
          else
               The units are wrong!
               Print an error message and stop processing
          let Gramme = Ounce/28.35
          let Pound = Kilogram/0.4536
          let Stone = Killogrammes/6.3503
          let Longton = metrictonne/1.016
          let Gramme = Kilogram/100
          dispay the results
          private static void createAndShowGUI();{
               ConvertValues newScreen = new ConvertValues();
     }

Answer 1

My main problem is how to assign events to the button so that it preforms a calculation. [url http://java.sun.com/docs/books/tutorial/uiswing/components/button.html]How to Use Buttons
Also, use the "Code Formatting Tags" when posting code so it retains its original formatting and is readable.