Hello all I am creating an applet using the biojava library for watching DNA traces.
I am using a JSrollPane object in which I am putting the sequencepanel(that I create using the biojava library) and then adding this scrollpane to the JFrame.
If i go about it this way then there is no error is execution but the only thing is I get a new Frame which is very much obvious.

If I use the javax.swing.JApplet then I can directly set the Layout of the applet and then I add the JScrollPane to it.
The trouble here is that I am not able to view the contents that I can see when I use the frame.

The code is as follows:
import java.awt.RenderingHints;
import java.io.IOException;
import org.biojava.bio.chromatogram.Chromatogram;
import org.biojava.bio.chromatogram.ChromatogramFactory;
import org.biojava.bio.chromatogram.UnsupportedChromatogramFormatException;
import org.biojava.bio.chromatogram.graphic.ChromatogramGraphic;
import org.biojava.bio.program.abi.ABIFChromatogram;
import javax.swing.JApplet;
import java.awt.Graphics;
import java.awt.Color;
import java.awt.Image;
import java.io.File;
import java.awt.image.BufferedImage;
import java.awt.Graphics2D;
import org.biojava.bio.*;
import org.biojava.bio.symbol.*;
import org.biojava.bio.seq.*;
import org.biojava.bio.gui.sequence.*;
import org.biojava.bio.program.abi.*;
import javax.swing.JFrame;
import javax.swing.JScrollPane ;
import java.awt.BorderLayout;

public class Trace extends javax.swing.JApplet {

public void paint(Graphics g)
{

File ft = new File("C:/Documents and Settings/akarhu3/Traceviewer/src/3422_A01.ab1");
try{
ABITrace trace = new ABITrace(ft);
AbiTraceRenderer renderer = new AbiTraceRenderer();
renderer.setTrace(trace);
renderer.setDepth(190.0);

MultiLineRenderer mlr = new MultiLineRenderer();

mlr.addRenderer(new SymbolSequenceRenderer());
mlr.addRenderer(renderer);
mlr.addRenderer(new RulerRenderer());

SequencePanel sp = new SequencePanel();
Sequence seq = SequenceTools.createSequence(
trace.getSequence(),
ft.toString(),
ft.toString(),
Annotation.EMPTY_ANNOTATION
);
sp.setSequence(SequenceTools.createSequence(
trace.getSequence(),
ft.toString(),
ft.toString(),
Annotation.EMPTY_ANNOTATION
));


sp.setDirection(SequencePanel.HORIZONTAL);
sp.setScale(8.0);

sp.setRange(new RangeLocation(0,200));
sp.setRenderer(mlr);

Sequence rev = SequenceTools.reverseComplement(seq);

***************************************************************
--------The frame part is commented out----------------
/*JFrame frame = new JFrame("Trace: " + ft);
frame.getContentPane().setLayout(new BorderLayout());
frame.getContentPane().add(new JScrollPane(sp), BorderLayout.CENTER);
frame.getContentPane().setBackground(Color.WHITE);
frame.setSize(800,300);
frame.setVisible(true);*/
------------------------------------------------------------------------------
***************************************************************************
BorderLayout br = new BorderLayout();
this.getContentPane().setLayout(br);
JScrollPane pane = new JScrollPane();
this.getContentPane().add(new JScrollPane(sp));
this.repaint();
//this.getContentPane().add(new JScrollPane(sp));
}

the main part is this much.
Also sometimes when i resize the applet window after sometimes the scrollpane is visible but not completely and also I get java.lang.OutOfMemoryError when I go on resizing the window?

Somebody please help me on this topic.

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