JTable with ScrollPane update problem

Question

hay i have a table and scrollpane is used as a container, at runtime i create new object of table and assign it to the scrollpane, but its still showing the old table,
I also tried to
updateUI();
repaint();
but it still showing the same old table,
I also debug and saw that the new table has been created n successfuly displaying the values at command prompt.
Can any one know whats wrong in it.

Answer 1

Dont be ferious budy, now this is a working example....
Problem is: I am changing the table object in jPanel2 but still jPanel2 is showing the same old table, I think there is a refresh kind of a problem
Be kool dude n tell where is the problem.
package tabletesting;
import java.awt.BorderLayout;
import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.*;
import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ContainerEvent;
import java.awt.event.ContainerAdapter;
public class EmbededTable extends JFrame {
public EmbededTable() {
try {
jbInit();
} catch (Exception exception) {
exception.printStackTrace();
private void jbInit() throws Exception {
flag=1; // flag to alter between objects
getContentPane().setLayout(null);
jPanel1.setBorder(BorderFactory.createEtchedBorder());
jPanel1.setBounds(new Rectangle(28, 11, 320, 76));
jPanel1.setBackground(Color.pink);
jPanel1.setVisible(true);
// jPanel1 contain the buttons when press toggel the table in panel
     this.setSize(new Dimension(640, 600));
this.addContainerListener(new EmbededTable_this_containerAdapter(this));
jPanel1.setLayout(null);
jButton1.setBounds(new Rectangle(57, 2, 71, 29));
jButton1.setText("jButton1");
jButton1.addActionListener(new EmbededTable_jButton1_actionAdapter(this));
jPanel2.setBorder(BorderFactory.createEtchedBorder());
jPanel2.setBounds(new Rectangle(22, 133, 578, 304));
jPanel2.addContainerListener(new EmbededTable_jPanel2_containerAdapter(this));
jPanel2.setLayout(borderLayout1);
testTable(); // to initially populate the jPanel2 with the tabel
jButton2.setBounds(new Rectangle(191, 20, 93, 25));
jButton2.setText("jButton2");
jButton2.addActionListener(new EmbededTable_jButton2_actionAdapter(this));
this.getContentPane().add(jPanel1);
jPanel1.add(jButton1, null);
jPanel1.add(jButton2);
this.getContentPane().validate();
this.setVisible(true);
this.show();
public void testTable()
String[] columnNames = {"First Name",
"Last Name",
"Sport",
"Include Input",
"Include Output"};
Object[][] data = {
{"Mary", "Campione",
"Snowboarding", new Boolean(false), new Boolean(false)},
{"Alison", "Huml",
"Rowing", new Boolean(false), new Boolean(true)},
{"Kathy", "Walrath",
"Knitting", new Boolean(false), new Boolean(false)},
{"Sharon", "Zakhour",
"Speed reading", new Boolean(false), new Boolean(true)},
{"Philip", "Milne",
"Pool", new Boolean(false), new Boolean(false)},
if(flag==1)
TableDemo newContentPane = new TableDemo(columnNames,data,4,5);
newContentPane.setOpaque(true); //content panes must be opaque
jPanel2.add(newContentPane, BorderLayout.CENTER);
jPanel2.updateUI();
jPanel2.repaint();
jPanel2.revalidate();
this.getContentPane().add(jPanel2);
flag=0;
else if(flag==0)
Object[][] daa = {
{"A", "T",
"B", new Boolean(false), new Boolean(false)},
{"C", "T",
"Rowing", new Boolean(false), new Boolean(true)},
{"D", "T",
"Knitting", new Boolean(false), new Boolean(false)},
{"E", "T",
"Speed reading", new Boolean(false), new Boolean(true)},
{"F", "T",
"Pool", new Boolean(false), new Boolean(false)},
TableDemo newContentPane = new TableDemo(columnNames,daa,4,5);
newContentPane.setOpaque(true); //content panes must be opaque
this.getContentPane().add(jPanel2);
this.jPanel2.add(newContentPane,BorderLayout.CENTER);
this.jPanel2.updateUI();
jPanel2.repaint();
jPanel2.revalidate();
this.getContentPane().add(jPanel2);
flag=1;
public static void main(String[] args) {
EmbededTable embededtable = new EmbededTable();
JPanel jPanel1 = new JPanel();
static int flag;
JButton jButton1 = new JButton();
JPanel jPanel2 = new JPanel();
JPanel jPanel3 = new JPanel();
BorderLayout borderLayout1 = new BorderLayout();
JButton jButton2 = new JButton();
public void CreateGUI()
String[] columnNames = {"First Name",
"Last Name",
"Sport",
"Include Input",
"Include Output"};
Object[][] data = {
{"A", "Campione",
"B", new Boolean(false), new Boolean(false)},
{"C", "Huml",
"Rowing", new Boolean(false), new Boolean(true)},
{"D", "Walrath",
"Knitting", new Boolean(false), new Boolean(false)},
{"E", "Zakhour",
"Speed reading", new Boolean(false), new Boolean(true)},
{"F", "Milne",
"Pool", new Boolean(false), new Boolean(false)},
//Create and set up the content pane.
TableDemo newContentPane = new TableDemo(columnNames,data,4,5);
newContentPane.setOpaque(true); //content panes must be opaque
jPanel3.setBorder(BorderFactory.createEtchedBorder());
jPanel3.setBounds(new Rectangle(22, 133, 578, 304));
jPanel3.setLayout(borderLayout1);
// this.getContentPane().remove(jPanel2);
this.getContentPane().add(jPanel3);
this.jPanel3.add(newContentPane,BorderLayout.CENTER);
this.jPanel3.updateUI();
this.validate();
public void jButton1_actionPerformed(ActionEvent e) {
CreateGUI();
public void jButton2_actionPerformed(ActionEvent e) {
testTable();
public void this_componentAdded(ContainerEvent e) {
public void jPanel2_componentRemoved(ContainerEvent e) {
System.out.println(" component removed");
public void jPanel2_componentAdded(ContainerEvent e) {
System.out.println(" component added");
class EmbededTable_jPanel2_containerAdapter extends ContainerAdapter {
private EmbededTable adaptee;
EmbededTable_jPanel2_containerAdapter(EmbededTable adaptee) {
this.adaptee = adaptee;
public void componentRemoved(ContainerEvent e) {
adaptee.jPanel2_componentRemoved(e);
public void componentAdded(ContainerEvent e) {
adaptee.jPanel2_componentAdded(e);
class EmbededTable_this_containerAdapter extends ContainerAdapter {
private EmbededTable adaptee;
EmbededTable_this_containerAdapter(EmbededTable adaptee) {
this.adaptee = adaptee;
public void componentAdded(ContainerEvent e) {
adaptee.this_componentAdded(e);
class EmbededTable_jButton2_actionAdapter implements ActionListener {
private EmbededTable adaptee;
EmbededTable_jButton2_actionAdapter(EmbededTable adaptee) {
this.adaptee = adaptee;
public void actionPerformed(ActionEvent e) {
adaptee.jButton2_actionPerformed(e);
class EmbededTable_jButton1_actionAdapter implements ActionListener {
private EmbededTable adaptee;
EmbededTable_jButton1_actionAdapter(EmbededTable adaptee) {
this.adaptee = adaptee;
public void actionPerformed(ActionEvent e) {
adaptee.jButton1_actionPerformed(e);
TabelDemo class
public class TableDemo extends JPanel {
private boolean DEBUG = false;
public TableDemo(String[] c, Object[][] d,int col,int row) {
super(new GridLayout(1, 0));
JTable table = new JTable(new MyTableModel(c,d,4,5));
table.setPreferredScrollableViewportSize(new Dimension(500, 70));
table.setFillsViewportHeight(true);
Object obj=table.getValueAt(0,1);
table.updateUI();
JScrollPane scrollPane = new JScrollPane();
scrollPane.getViewport().setView(table);
     Object ob= table.getValueAt(0,0);
System.out.println(" ob " + ob.toString());
scrollPane.updateUI();
scrollPane.getViewport().revalidate();
scrollPane.getViewport().updateUI();
add(scrollPane);
this.updateUI();
this.revalidate();
super.repaint();
super.validate();
Tabel class
public class MyTableModel extends AbstractTableModel {
boolean DEBUG= false;
public String[] columnNames ;
public String[] str; // to verify only one output variable
Boolean fal= new Boolean(false);
     public Object[][] data;
MyTableModel()
MyTableModel(String[] col, Object[][] dat, int lenRow, int lenCol)
data=dat;
columnNames=col;
str= new String[col.length];
funcopy(str,lenRow);
void funcopy(String[] str, int lenRow)
for(int i=0;i<lenRow;i++)
str=fal.toString();
for(int i=0;i<str.length;i++)
System.out.println("values are " + str[i]);
public int getColumnCount() {
return columnNames.length;
public int getRowCount() {
return data.length;
public String getColumnName(int col) {
return columnNames[col];
public Object getValueAt(int row, int col) {
return data[row][col];
public Class getColumnClass(int c) {
return getValueAt(0, c).getClass();
public boolean isCellEditable(int row, int col) {
//Note that the data/cell address is constant,
//no matter where the cell appears onscreen.
if (col < 2) {
return false;
} else {
return true;
public void setValueAt(Object value, int row, int col) {
if (DEBUG) {
System.out.println("Setting value at " + row + "," + col
+ " to " + value
+ " (an instance of "
+ value.getClass() + ")");
System.out.println("row " + row + "col " + col + value.toString());
Object obj= getValueAt(row,col);
if(col==3) // column 3 is the output column.
if(value.toString().equals("true"))
int savepointer=row;
int flag=-1;
for(int i=0;i<str.length;i++)
if(str[i].toString().equalsIgnoreCase("true"))
flag=1;
if(flag!=1)
System.out.println("inside flag ==1");
data[row][col]=value;
str[row]=value.toString();
fireTableCellUpdated(row, col);
if(value.toString().equals("false"))
data[row][col]=value;
str[row]=value.toString();
fireTableCellUpdated(row, col);
}// id col ends...
if (DEBUG) {
System.out.println("New value of data:");
printDebugData();
private void printDebugData() {
int numRows = getRowCount();
int numCols = getColumnCount();
for (int i=0; i < numRows; i++) {
System.out.print(" row " + i + ":");
for (int j=0; j < numCols; j++) {
System.out.print(" " + data[i][j]);
System.out.println();
System.out.println("--------------------------");