Help on JtabbedPane and JFrame

Question

Hi everyone, i am self studying java and I am following tutorials I got from Sun developer (the Divelog application). However, i can't figure out the following problem:
1. The field DiveLog.dllframe is never read locally
2. The field DiveLog.tabbedPane is never read locally
3. The import java.awt is never used
And here's my code...
package divelog;
import javax.swing.*;
import java.awt.*;
//import java.awt.event.*;
//class defining application framework
public class DiveLog
private JFrame dlframe; //not assigned yet
private final JTabbedPane tabbedPane; //not assigned yet
public DiveLog()
{ // Opens constructor
// Creates a frame object to add to
// the application GUI components.
dlframe = new JFrame("A Java Technology Dive Log");
} // Closes main method
} //Ends class DiveLog
I hope guys that you can help me out... Thanks!

Answer 1

when you declare the final variables, it should be initialized otherwise you will get error
private final JTabbedPane tabbedPane; //not assigned yet should be
private final JTabbedPane tabbedPane = new JTabbedPane()