Need help with an app

Question

what i need is the following:
Create an applet that has a JTextField for the user to enter the name of a color. If the color entered is not either red, white, blue, then your applet should throw an Exception and tell the user the color entered was not valid. Otherwise change the background color to the appropriate color.
this is what i have
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Colors extends JApplet implements ActionListener //make the class
     private GridLayout layout = new GridLayout(3, 1);
     JPanel panel02 = new JPanel(new FlowLayout()); //make panels
     JPanel panel03 = new JPanel(new FlowLayout());
     JPanel panel04 = new JPanel(new FlowLayout());
     Container con = getContentPane();
     FlowLayout Lay = new FlowLayout(FlowLayout.CENTER);
     JLabel head = new JLabel("Please enter a color");
     JTextField choice = new JTextField("",10);
     JButton enter = new JButton("Press After Typing");
     JLabel error = new JLabel("");
     JPanel pane = new JPanel() ; //make a new panel
     public void init()
          con.setLayout(layout);//set the layout
          con.add(panel02);
          con.add(panel03);
          con.add(panel04);
          panel02.add(head);
          panel03.add(choice);
          panel03.add(enter);
               enter.addActionListener(this);
          panel04.add(error);
     public void actionPerformed(ActionEvent e) //make the actions
          String red, white, blue;
          Object source = e.getSource(); //get the source
          String aColor = choice.getText();
                    if(aColor == "red")
               panel02.setBackground(Color.RED);     
//panel02.setBackground(Color.RED);
//panel03.setBackground(Color.BLUE);
//panel04.setBackground(Color.WHITE);
error.setText(aColor); //("Wrong Color Choice");               
               if(aColor == "red")
                    getContentPane().setBackground(Color.RED); //change the back ground color
               //catch(Exception ex)
               //     error.setText("Wrong Color Choice");
}

Answer 1

Did you already try to reset the phone by holding the sleep and home button for about 10sec, until the Appel logo comes back again? You will not lose data by resetting, but it can cure some glitches.