MultiLineCellRenderer (TableCellRenderer) not working in 1.4

Question

I have the following custom TableCellRenderer I use to display a multi-line cell in a JTable. The row height is suppose to adjust itself automatically so that all the text is visible. This worked perfectly fine in 1.3. In 1.3, the JTextArea was given a preferred size after setting the text, so when calling the getPreferredSize() method, I would get the dimensions of the text area needed to display the entire text. In 1.4, however, I seem to get the default preferred size (100x34) even after setting the text, so my row height is never set properly. Does anybody have any work around for this?
public class MultiLineCellRenderer extends JTextArea
  implements TableCellRenderer {
  JTable mTable;
    public MultiLineCellRenderer(JTable table) {
      super();
      mTable = table;
      setLineWrap(true);
      setWrapStyleWord(true);
      setOpaque(true);
      setEditable(false);
    public Component getTableCellRendererComponent(JTable jTable,
        Object obj, boolean isSelected, boolean hasFocus, int row,
        int column) {
      // set the text
      setText((obj == null)?"":obj.toString());
      // get the current row height
      int height = mTable.getRowHeight(row);
      System.out.println("Get Preferred Size: " + getPreferredSize());
      System.out.println("Get Size: " + getSize());
      // if the current height is insufficient, resize the row height
      if (height < this.getPreferredSize().getHeight()) {
        mTable.setRowHeight(row, (int)(getPreferredSize().getHeight()));
      return this;
}

Answer 1

Hi,
I am also using almost the similar code and using JDK1.3, but I am using my table in a scroll pane. Problem is that when I am using the scroll bar, sometimes the text in cells get wrapped and sometimes not.
Some changes in my code from your code are :
1. I am not extending my renderer from JTextArea, instead using a member variable of JTextArea in my renderer class and returning that after setting the text and row height from getTableCellRendererComponent() method.
2. I am not keeping table as a member variable in the class. I am setting row height of the table instance that comes in the getTableCellRendererComponent() method.
Can anyone tell me why it does not work while scrolling?
My code is something like below:
public class MultiLineCellRenderer implements TableCellRenderer {
   JTextArea myLabel;
     public MultiLineCellRenderer(JTable table) {
        myLabel = new JTextArea(); 
        myLabel.setLineWrap(true);
       myLabel.setWrapStyleWord(true);
       myLabel.setOpaque(true);
       myLabel.setEditable(false);
public Component
getTableCellRendererComponent(JTable jTable,
Object obj, boolean isSelected, boolean
boolean hasFocus, int row,
         int column) {
       // set the text
       myLable.setText((obj == null)?"":obj.toString());
       // get the current row height
       int height = jTable.getRowHeight(row);
// if the current height is different, resize the row height
if (height != myLabel.getPreferredSize().getHeight()) {
jTable.setRowHeight(row, (int)(getPreferredSize().getHeight()));
       return myLabel;