Number of of lines in af row.

Question

Hi Experts.
I need some help. I'm trying to display JTextAreas in a table using the TableCellRenderer interface. My problem is that I have to display more than one line in each row (I need linewrap). I think the tables cell size prevents the expansion of the JTextArea. I've posted my code and marked the important places:
package box;
import java.applet.*;
import java.sql.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import com.borland.jbcl.layout.*;
import java.util.ArrayList;
import javax.swing.table.TableCellRenderer;
public class GUI
    extends Applet {
  boolean isStandalone = false;
  BorderLayout borderLayout1 = new BorderLayout();
  JTextField tArea1 = new JTextField();
  Label tArea2 = new Label();
  JButton jButton1 = new JButton();
  JLabel jLabel1 = new JLabel();
  JLabel jLabel2 = new JLabel();
  JPanel rightPanel = new JPanel();
  JPanel leftPanel = new JPanel();
  JPanel leftTopPanel = new JPanel();
  JPanel leftBotPanel = new JPanel();
  JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT);
  Thread graphFrame;
  dbInterface db = new dbInterface();
   Connection dbConn = null;
  //Get a parameter value
  public String getParameter(String key, String def) {
    return isStandalone ? System.getProperty(key, def) :
        (getParameter(key) != null ? getParameter(key) : def);
  //Construct the applet
  public void init() {
    int lastValue;
    jbInit();
    lastValue = db.getLatest(dbConn);
    String temp = Integer.toString(lastValue);
    showText(temp);
  //Component initialization
  private void jbInit() {
    dbConn = db.dbConnect();
    this.setLayout(new XYLayout());
    tArea1.setBackground(Color.lightGray);
    tArea1.setBorder(null);
    tArea1.setDisabledTextColor(Color.white);
    tArea1.setText("56");
    tArea1.setHorizontalAlignment(JLabel.CENTER);
    tArea2.setAlignment(Label.CENTER);
    tArea2.setBackground(Color.lightGray);
    tArea2.setText("");
    tArea2.addMouseListener(new GUI_tArea2_mouseAdapter(this));
    jButton1.setText("Set temperature");
    jButton1.addMouseListener(new GUI_jButton1_mouseAdapter(this));
    jButton1.addActionListener(new GUI_jButton1_actionAdapter(this));
    jLabel1.setText("From db");
    jLabel2.setText("UI");
String[] columnNames = {"test"};
Object[][] data = {{new JTextArea("Max f sf sf sf a fas f dsf s fds f dsf ds")}, {new JTextArea("test")}};
JTable table = new JTable(data, columnNames);
table.setDefaultRenderer(Object.class, new TableRenderer());
    leftPanel.setLayout(new XYLayout());
    rightPanel.setLayout(new XYLayout());
    leftTopPanel.setLayout(new XYLayout());
    leftBotPanel.setLayout(new XYLayout());
    rightPanel.add(tArea1, new XYConstraints(50, 50, 30, 20));
    rightPanel.add(jLabel1, new XYConstraints(50, 30, -1, -1));
    rightPanel.add(jButton1, new XYConstraints(50, 80, 120, 22));
    rightPanel.add(tArea2, new XYConstraints(140, 50, 30, 20));
    rightPanel.add(jLabel2, new XYConstraints(140, 30, -1, -1));
    splitPane.setLeftComponent(leftPanel);
    splitPane.setRightComponent(rightPanel);
    splitPane.setDividerLocation(150);
    splitPane.setDividerSize(6);
    JScrollPane scrollPane = new JScrollPane(table);
    leftTopPanel.add(scrollPane, new XYConstraints(0,0,149,200));
    leftPanel.add(leftTopPanel, new XYConstraints(0, 0, 150,200));
    this.add(splitPane, new XYConstraints(0,0,400,300));
  private void showText(final String text) {
    SwingUtilities.invokeLater(new Runnable() {
      public void run() {
        tArea2.setText(text);
        // Check if the new value crosses the specified limits
        checkBounds(tArea2);
  public void checkBounds(Label tArea2) {
    // Parses the value in the tArea2 as an integer
    int value = Integer.parseInt(tArea2.getText());
    // Check if the limit is passe
    if (value > 100) {
      tArea2.setBackground(Color.red);
    else {
      tArea2.setBackground(Color.lightGray);
  } class TableRenderer extends JLabel implements TableCellRenderer {
public TableRenderer() {
setOpaque(true);
public Component getTableCellRendererComponent(JTable table,
Object value,
boolean isSelected,
boolean hasFocus,
int row,
int column) {
JTextArea textA = (JTextArea) value;
textA.setLineWrap(true);
System.out.println("renderer");
textA.setBackground(Color.red);
return textA;
}  public void jButton1_actionPerformed(ActionEvent e) {
    String input = tArea1.getText();
    showText(input);
  public void tArea2_mouseClicked(MouseEvent e) {
    this._disable();
    graphFrame = new Thread(new graphForm(this));
    graphFrame.start();
  public void tArea2_mouseEntered(MouseEvent e) {
    setCursor(new Cursor(Cursor.HAND_CURSOR));
  public void tArea2_mouseExited(MouseEvent e) {
    setCursor(new Cursor(Cursor.DEFAULT_CURSOR));
class GUI_jButton1_actionAdapter
    implements ActionListener {
  private GUI adaptee;
  GUI_jButton1_actionAdapter(GUI adaptee) {
    this.adaptee = adaptee;
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton1_actionPerformed(e);
class GUI_jButton1_mouseAdapter
    extends MouseAdapter {
  private GUI adaptee;
  GUI_jButton1_mouseAdapter(GUI adaptee) {
    this.adaptee = adaptee;
class GUI_tArea2_mouseAdapter
    extends MouseAdapter {
  private GUI adaptee;
  GUI_tArea2_mouseAdapter(GUI adaptee) {
    this.adaptee = adaptee;
  public void mouseEntered(MouseEvent e) {
    adaptee.tArea2_mouseEntered(e);
  public void mouseClicked(MouseEvent e) {
    adaptee.tArea2_mouseClicked(e);
  public void mouseExited(MouseEvent e) {
    adaptee.tArea2_mouseExited(e);
}

Answer 1

Search the Swing forum. This question has been asked twice in the last couple of days.