Name: skT45625 Date: 05/12/2000


On Windows 95:

java version "1.2"
HotSpot VM (1.0.1, mixed mode, build c)


On Solaris:

java version "1.2.1"
Classic VM (build JDK-1.2.1-A, native threads, sunwjit)

When a JTable using any objects of type DefaultTableCellRenderer, or
subclasses, is serialized, the colors used to render cells in the JTable
subsequent to the call to writeObject() are forced to the default colors for
DefaultTableCellRenderer's immediate base class, JLabel, causing the colors
defined in the JTable (typically black on white) to be ignored.

I first ran across this problem under Solaris, Java version 1.2.1, and was able
to reproduce it on Windows 95 under Java 1.2 in the process of generating the
sample code below.

A code sample illustrating the problem follows:

RendererExample.java

import javax.swing.*;
import javax.swing.table.*;
import java.lang.*;
import java.util.*;
import java.io.*;

public class RendererExample {

   public RendererExample() {
      new RendererFrame();
   }

   public static void main (String[] args) {
      RendererExample app = new RendererExample();
   }
}


class RendererFrame extends JFrame {
   RendererFrame() {
      super();
      String[][] rowData = { {"1-1","1-2","1-3"},
                             {"2-1","2-2","2-3"},
                             {"3-1","3-2","3-3"} };

      String[] columnData = {"Column 1", "Column 2", "Column 3"};

      JTable table = new JTable(rowData, columnData);

      table.setDefaultRenderer(table.getColumnClass(1),
                               new DefaultTableCellRenderer());

      // If this try block is removed, table text remains black on white.

      try {

         ObjectOutputStream ostream = new ObjectOutputStream(new
ByteArrayOutputStream());
         ostream.writeObject(table.getDefaultRenderer(table.getColumnClass(1)));
      } catch (IOException ioex) {
         ioex.printStackTrace();
      }

      getContentPane().add(table);

      pack();
      setVisible(true);
   }
}
(Review ID: 104821)
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