Help!! cant get the button to make the calculation take place

Question

hi, im kinda new at this
im trying to create a download program, and am unable to make it so that the damn answer will work. any ideas of what im doing wrong?? heres my code:
//by Brett Kennelly
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.text.DecimalFormat;
public class Download implements ActionListener {
     boolean start = false;
     JLabel label;
     JButton calcButton;
     JPanel pane, radioPanel;
     JFrame frame;
     JTextField filesize, speed, alreadydl;
     String kilobytes = "kilobytes";
     String bytes = "bytes";
     String megabytes = "megabytes";
public Download() {
     // create the widgets
          // creates the radio buttons
          JRadioButton kiloButton = new JRadioButton(kilobytes);
          kiloButton.setActionCommand(kilobytes);
          JRadioButton byteButton = new JRadioButton(bytes);
          byteButton.setActionCommand(bytes);
          JRadioButton megaButton = new JRadioButton(megabytes);
          megaButton.setActionCommand(megabytes);
          megaButton.setSelected(true);
          // calculation button created
          calcButton = new JButton("Calculate");
          calcButton.addActionListener(this);
          calcButton.setActionCommand("calc");
          // label displaying answer created
     label = new JLabel("No button pressed", SwingConstants.CENTER);
          // create the text fields
          filesize = new JTextField(2);
          speed = new JTextField(2);
          alreadydl = new JTextField(2);
          // add components to panel
     pane = new JPanel();
          pane.setLayout(new GridLayout(0, 2));
     pane.add(calcButton);
     pane.add(label);
          pane.add(filesize);
          pane.add(speed);
          pane.add(alreadydl);
          // groups the radio buttons
          ButtonGroup group = new ButtonGroup();
          group.add(byteButton);
          group.add(kiloButton);
          group.add(megaButton);
          // Register a listener for the radio buttons.
     RadioListener myListener = new RadioListener();
     byteButton.addActionListener(myListener);
     kiloButton.addActionListener(myListener);
     megaButton.addActionListener(myListener);
          // panel holding radio buttons is created
          radioPanel = new JPanel();
          radioPanel.setLayout(new GridLayout(0,1));
          radioPanel.add(byteButton);
          radioPanel.add(kiloButton);
          radioPanel.add(megaButton);
          // create the top-level container
     frame = new JFrame("Download");
     frame.getContentPane().add(pane, BorderLayout.WEST);
          frame.getContentPane().add(radioPanel, BorderLayout.CENTER);
     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          frame.pack();
     frame.setVisible(true);
class RadioListener implements ActionListener {
     public void actionPerformed(ActionEvent e) {
               String command = e.getActionCommand();
                    DecimalFormat df1 = new DecimalFormat("##.00");
                    // values of the contents of the text fields recieved and implemented into thier according equation
                    double totalsize = (double)(Double.parseDouble(filesize.getText()));
                    double speedofdl = (double)(Double.parseDouble(speed.getText()));
                    double alreadydled = (double)(Double.parseDouble(alreadydl.getText()));
               if(command=="bytes") {double actualsize = totalsize - alreadydled;
                    double inkb = actualsize / 1024.000;
                    double files = inkb / speedofdl;
                    double finalnum = files / 60.000 / 60.000;
               label.setText(df1.format(finalnum) + (" Hours to go!"));}
               if(command=="kilobytes") {double actualsize = totalsize - alreadydled;
                    double files = actualsize / speedofdl;
                    double finalnum = files / 60.000 / 60.000;
               label.setText(df1.format(finalnum) + (" Hours to go!"));}
               if(command=="megabytes") {double actualsize = totalsize - alreadydled;
                    double inkb =  actualsize * 1024.000;
                    double files = inkb / speedofdl;
                    double finalnum = files / 60.000 / 60.000;
               label.setText(df1.format(finalnum) + (" Hours to go!"));}
     public static void main(String[] args) {
          Download app = new Download();
thanks.

Answer 1

hi, ive completely (or practicaly) redone the code, and narrowed it down to one error:
Download.java:58 illegal start of expression
public void actionPerformed(ActionEvent e) {
and heres the new code:
//by Brett Kennelly
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.text.DecimalFormat;
public class Download implements ActionListener {
     boolean start = false;
     JLabel label;
     JButton calcButton;
     JPanel pane, radioPanel;
     JFrame frame;
     JTextField filesize, speed, alreadydl;
     String kilobytes = "kilobytes";
     String bytes = "bytes";
     String megabytes = "megabytes";
     public Download() {
          // create the widgets
          // calculation button created
          calcButton = new JButton("Calculate");
          calcButton.addActionListener(this);
          calcButton.setActionCommand("calc");
          // label displaying answer created
     label = new JLabel("No button pressed", SwingConstants.CENTER);
          // create the text fields
          filesize = new JTextField(2);
          speed = new JTextField(2);
          alreadydl = new JTextField(2);
          // add components to panel
     pane = new JPanel();
          pane.setLayout(new GridLayout(0, 2));
     pane.add(calcButton);
     pane.add(label);
          pane.add(filesize);
          pane.add(speed);
          pane.add(alreadydl);
          // create the top-level container
     frame = new JFrame("Download");
     frame.getContentPane().add(pane, BorderLayout.WEST);
     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          frame.pack();
     frame.setVisible(true);
                    public void actionPerformed(ActionEvent e) {
                    String command = e.getActionCommand();
                    if(command="calc") {start = true;
                        Download.RadioB();}
               public RadioB() implements ActionListener {
                    // creates the radio buttons
                    JRadioButton kiloButton = new JRadioButton(kilobytes);
                    kiloButton.setActionCommand(kilobytes);
                    JRadioButton byteButton = new JRadioButton(bytes);
                    byteButton.setActionCommand(bytes);
                    JRadioButton megaButton = new JRadioButton(megabytes);
                    megaButton.setActionCommand(megabytes);
                    megaButton.setSelected(true);
                    // groups the radio buttons
                    ButtonGroup group = new ButtonGroup();
                    group.add(byteButton);
                    group.add(kiloButton);
                    group.add(megaButton);
                    // panel holding radio buttons is created
                    radioPanel = new JPanel();
                    radioPanel.setLayout(new GridLayout(0,1));
                    radioPanel.add(byteButton);
                    radioPanel.add(kiloButton);
                    radioPanel.add(megaButton);
                    frame.getContentPane().add(radioPanel, BorderLayout.CENTER);
               if(start=true) {
          public void actionPerformed(ActionEvent e) {
               String command2 = e.getActionCommand();
               DecimalFormat df1 = new DecimalFormat("##.00");
               // values of the contents of the text fields recieved and implemented into thier according equation
               double totalsize = (double)(Double.parseDouble(filesize.getText()));
               double speedofdl = (double)(Double.parseDouble(speed.getText()));
               double alreadydled = (double)(Double.parseDouble(alreadydl.getText()));
               if(command==bytes) {double actualsize = totalsize - alreadydled;
                    double inkb = actualsize / 1024.000;
                    double files = inkb / speedofdl;
                    double finalnum = files / 60.000 / 60.000;
               label.setText(df1.format(finalnum) + (" Hours to go!"));}
               if(command==kilobytes)) {double actualsize = totalsize - alreadydled;
                    double files = actualsize / speedofdl;
                    double finalnum = files / 60.000 / 60.000;
               label.setText(df1.format(finalnum) + (" Hours to go!"));}
               if(command==megabytes) {double actualsize = totalsize - alreadydled;
                    double inkb =  actualsize * 1024.000;
                    double files = inkb / speedofdl;
                    double finalnum = files / 60.000 / 60.000;
               label.setText(df1.format(finalnum) + (" Hours to go!"));}
          public void actionPerformed(ActionEvent e) {};
     public static void main(String[] args) {
          Download app = new Download();
any help would be great thanks