Trying to set a JLabel off of a JTable

Question

Hi! I am trying to let a user select a row from a Jtable and have those highlighted values displayed below in another panel. Problem is that the gui never seems to refresh. Any ideas?
public class MainClass{
  public static void main( String[] args ){
    JFrame mainFrame = new JFrame( "Main Class" );
    MyTableModel tableModel = new MyTableModel();
    JTable table = new JTable( tableModel );
    table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    ListSelectionModel rowSM = table.getSelectionModel();
    rowSM.addListSelectionListener( new PanelModel() );
    JScrollPane tableScrollPane = new JScrollPane( table );
    tableScrollPane.setPreferredSize( new Dimension( 80, 80 ) );
    PanelView panelView = new PanelView();
    JScrollPane panelScrollPane = new JScrollPane( panelView );
    panelScrollPane.setPreferredSize( new Dimension(80, 80) );
    mainFrame.getContentPane().add( tableScrollPane, BorderLayout.NORTH );
    mainFrame.getContentPane().add( panelScrollPane, BorderLayout.SOUTH );
    mainFrame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
    mainFrame.pack();
    mainFrame.setVisible( true );
public class PanelModel implements ListSelectionListener{
  private String anything;
  MyTableModel tableModel = new MyTableModel();
  public void valueChanged(ListSelectionEvent lse) {
    if (lse.getValueIsAdjusting()) return;
    ListSelectionModel lsm = (ListSelectionModel)lse.getSource();
    if (lsm.isSelectionEmpty()) {
      //no rows are selected
    } else {
      int selectedRow = lsm.getMinSelectionIndex();
      String rowValue = (String)tableModel.getValueAt(selectedRow, 0);
      this.populate( rowValue );
  public void populate(String something){
    this.setAnything(something);
    PanelView myPanelView = new PanelView();
    myPanelView.RowInfoField.setText(this.getAnything());
    myPanelView.updateUI();
  public String getAnything() {
    return this.anything;
  public void setAnything( String anything ) {
    this.anything = anything;
public class MyTableModel extends AbstractTableModel{
  private String[] columns = {"Column 1"};
  private String[][] rows = { {"Something"}, {"Anything"} };
  private static int selectedRow;
  public int getColumnCount(){
    return columns.length;
  public int getRowCount(){
    return rows.length;
  public int getSelectedRow(){
    return selectedRow;
  public Object getValueAt(int r, int c){
    if(rows[r] != null && columns[c] != null){
      return rows[r][c];
    return null;
public class PanelView  extends JPanel{
  MyTableModel tm;
  int rowSelected = 0;
  private String rowInfo;
  JLabel RowInfoField;
  JLabel RowInfoLabel;
  JPanel panelModel;
  public PanelView() {
    panelModel = new JPanel( new GridLayout() );
    tm = new MyTableModel();
    rowSelected = tm.getSelectedRow();
    rowInfo = (String)tm.getValueAt(rowSelected,0);
    JLabel RowInfoLabel = new JLabel( "RowInfo  " );
    RowInfoLabel.setForeground( Color.black );
    RowInfoField = new JLabel(rowInfo);
    RowInfoField.setFont( new Font( "Serif", 1, 11 ) );
    panelModel.add( RowInfoLabel );
    panelModel.add( RowInfoField );
    this.add( panelModel );
    this.setEnabled( true );
}

Answer 1

The problem is in the PanelModel.java line 24. Every time you create new PanelView but not add to the Frame. Following is a quick fix.
PanelModel.java
===================================================================
import javax.swing.*;
import java.awt.*;
import javax.swing.event.*;
import java.awt.event.*;
public class PanelModel implements ListSelectionListener{
private String anything;
MyTableModel tableModel = new MyTableModel();
public void valueChanged(ListSelectionEvent lse) {
if (lse.getValueIsAdjusting()) return;
ListSelectionModel lsm = (ListSelectionModel)lse.getSource();
if (lsm.isSelectionEmpty()) {
//no rows are selected
} else {
int selectedRow = lsm.getMinSelectionIndex();
String rowValue = (String)tableModel.getValueAt(selectedRow, 0);
this.populate( rowValue );
public void populate(String something){
          System.out.println("something: " + something);
this.setAnything(something);
          MainClass.panelView.RowInfoField.setText(this.getAnything());
// PanelView myPanelView = new PanelView();
// myPanelView.RowInfoField.setText(this.getAnything());
// myPanelView.updateUI();
public String getAnything() {
return this.anything;
public void setAnything( String anything ) {
this.anything = anything;
===================================================================
MainClass.java
===================================================================
import javax.swing.*;
import java.awt.*;
import javax.swing.event.*;
import java.awt.event.*;
public class MainClass{
public static PanelView panelView;
public static void main( String[] args ){
JFrame mainFrame = new JFrame( "Main Class" );
MyTableModel tableModel = new MyTableModel();
JTable table = new JTable( tableModel );
table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
ListSelectionModel rowSM = table.getSelectionModel();
rowSM.addListSelectionListener( new PanelModel() );
JScrollPane tableScrollPane = new JScrollPane( table );
tableScrollPane.setPreferredSize( new Dimension( 80, 80 ) );
panelView = new PanelView();
JScrollPane panelScrollPane = new JScrollPane( panelView );
panelScrollPane.setPreferredSize( new Dimension(80, 80) );
mainFrame.getContentPane().add( tableScrollPane, BorderLayout.NORTH );
mainFrame.getContentPane().add( panelScrollPane, BorderLayout.SOUTH );
mainFrame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
mainFrame.pack();
mainFrame.setVisible( true );
===================================================================
MyTableModel.java
===================================================================
import javax.swing.*;
import java.awt.*;
import javax.swing.event.*;
import java.awt.event.*;
import javax.swing.table.*;
public class MyTableModel extends AbstractTableModel{
private String[] columns = {"Column 1"};
private String[][] rows = { {"Something"}, {"Anything"} };
private static int selectedRow;
public int getColumnCount(){
return columns.length;
public int getRowCount(){
return rows.length;
public int getSelectedRow(){
return selectedRow;
public Object getValueAt(int r, int c){
if(rows[r] != null && columns[c] != null){
return rows[r][c];
return null;
===================================================================
PanelView.java
===================================================================
import javax.swing.*;
import java.awt.*;
import javax.swing.event.*;
import java.awt.event.*;
public class PanelView extends JPanel{
MyTableModel tm;
int rowSelected = 0;
private String rowInfo;
JLabel RowInfoField;
JLabel RowInfoLabel;
JPanel panelModel;
public PanelView() {
panelModel = new JPanel( new GridLayout() );
tm = new MyTableModel();
rowSelected = tm.getSelectedRow();
rowInfo = (String)tm.getValueAt(rowSelected,0);
JLabel RowInfoLabel = new JLabel( "RowInfo " );
RowInfoLabel.setForeground( Color.black );
RowInfoField = new JLabel(rowInfo);
RowInfoField.setFont( new Font( "Serif", 1, 11 ) );
panelModel.add( RowInfoLabel );
panelModel.add( RowInfoField );
this.add( panelModel );
this.setEnabled( true );
===================================================================