ConsoleWindow.init()

The following code should display a window and write to:

System.setOut()
System.setErr()

1. I didn't find any log files or see anything displayed in the console, where do these methods write?

2. ConsoleWindow.init() has to be called from the main method, whilst somehow I am under the impression that this is called automatically.

3. ConsoleWindow.init() should call a window that displays debug messages. However, no such window appears.

Any ideas?

:confused:

Code:

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[B]ConsoleWindow.java1[/B]
package homenetwork.bkr.training;

import javax.swing.*;
import java.io.*;

/** A window that displays the bytes sent to System.out and System.err
 *
 */
public class ConsoleWindow {
       
        public void init()
        {
                JFrame frame = new JFrame();
                frame.setTitle("Console Window");
                final JTextArea output = new JTextArea();
                output.setEditable(false);
                frame.add(new JScrollPane(output));
                frame.setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
                frame.setLocation(DEFAULT_LEFT, DEFAULT_TOP);
                frame.setFocusableWindowState(false);
                frame.setVisible(true);
               
                //define a PrintStream that sends its bytes to the output text area
                PrintStream consoleStream = new PrintStream(new OutputStream()
                {
                        public void write (int b) {} //never called
                        public void write(byte[] b, int off, int len)
                        {
                                output.append(new String(b, off, len));
                        }
                });
               
                //set both System.out and System.err to that stream
                System.setOut(consoleStream);
                System.setErr(consoleStream);
        }
       
        public static final int DEFAULT_WIDTH = 300;
        public static final int DEFAULT_HEIGHT = 200;
        public static final int DEFAULT_LEFT = 200;
        public static final int DEFAULT_TOP = 200;
}


[B]Test.java[/B]
package homenetwork.bkr.training;

public class Test {

        /**
        * @param args
        */
        public static void main(String[] args) {
               
                ConsoleWindow window = new ConsoleWindow();
                [B]window.init();[/B]

        }

}

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NOTE 1:Core Java Vol I Fundamentals 8th Ed Pg.597 (511).