JTable using swings

[kasiram.p@gmail.com]

Here bellow my code is working fine but JTable click on maximize button alternate colors of the rows was 'not alternate' and scrolling up and down was same probleam...

import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;
public class Testdemo
        extends     JFrame
{
    private     JTabbedPane tabbedPane;
    private     JPanel      panel1;
    private     JPanel      panel2;
    private     JPanel      panel3;
JTable mappingTable;
JScrollPane pane;

    public Testdemo()
    {
        // NOTE: to reduce the amount of code in this example, it uses
        // panels with a NULL layout.  This is NOT suitable for
        // production code since it may not display correctly for
        // a look-and-feel.
        
        setTitle( "Tabbed Pane Application" );
        setSize( 300, 200 );
        setBackground( Color.gray );

        JPanel topPanel = new JPanel();
        topPanel.setLayout( new BorderLayout() );
        getContentPane().add( topPanel );

        // Create the tab pages
        createPage1();
        createPage2();
        createPage3();

        // Create a tabbed pane
        tabbedPane = new JTabbedPane();
        tabbedPane.addTab( "Page 1", panel1 );
        tabbedPane.addTab( "Page 2", panel2 );
        tabbedPane.addTab( "Page 3", panel3 );
        topPanel.add( tabbedPane, BorderLayout.CENTER );
    }

    public void createPage1()
    {
        panel1 = new JPanel();
        panel1.setLayout( new BorderLayout() );

        Object values[] = { "SNo","Source system", "Source Table","Source field Name","Data Type","Field Length","NaturalIdentifier","Target System","Target Table","Field Name","Data Type","Length","Primary Key","Field Description","Data Mapping Rule","Transformation Rules","ETL Load rules(one per table)","Comment","Status" };
         TableModel model = new DefaultTableModel(values, 1010){
                public boolean isCellEditable(int row,int column)
                    {
                    
                    if(column==0||column==5||column==11)
                    return false;
                    return true;
                    }
                };
             mappingTable = new javax.swing.JTable (1010,19) {
                     public Component prepareRenderer(TableCellRenderer renderer, int row, int column){
                            Component returnComp = super.prepareRenderer(renderer, row, column);
                            Color alternateColor = new Color(252,242,206);
                            Color whiteColor = Color.WHITE;
                            if (!returnComp.getBackground().equals(getSelectionBackground())){
                                Color bg = (row % 2 == 0 ? alternateColor : whiteColor);
                                returnComp .setBackground(bg);
                                bg = null;
                            }
                            return returnComp;
                     }
                
                    public boolean isCellEditable(int row,int column)
                    {
                        for(int i=0;i<mappingTable.getRowCount();i++)
                        {
                            for(int j=0;j<mappingTable.getColumnCount();j++)
                            {
                                if(mappingTable.getValueAt(i,j)!=null&&mappingTable.getValueAt(i,j).toString().length()>=1)
                                {
                                    for(int k=0;k<=i;k++)
                                    {
                                        mappingTable.setValueAt((k+1), k, 0);
                                        
                                    }
                                }
                            }
                        }
                        if(column==0)
                            return false;
                            return true;
                    }
                    
                      
                    };
                   mappingTable.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);
                   pane = new JScrollPane(mappingTable);
                  
                   JLabel l=new JLabel("KKKKK");
                   panel1.add(pane,BorderLayout.CENTER);
    }

    public void createPage2()
    {
        panel2 = new JPanel();
        panel2.setLayout( new BorderLayout() );

        panel2.add( new JButton( "North" ), BorderLayout.NORTH );
        panel2.add( new JButton( "South" ), BorderLayout.SOUTH );
        panel2.add( new JButton( "East" ), BorderLayout.EAST );
        panel2.add( new JButton( "West" ), BorderLayout.WEST );
        panel2.add( new JButton( "Center" ), BorderLayout.CENTER );
    }

    public void createPage3()
    {
        panel3 = new JPanel();
        panel3.setLayout( new GridLayout( 3, 2 ) );

        panel3.add( new JLabel( "Field 1:" ) );
        panel3.add( new TextArea() );
        panel3.add( new JLabel( "Field 2:" ) );
        panel3.add( new TextArea() );
        panel3.add( new JLabel( "Field 3:" ) );
        panel3.add( new TextArea() );
    }

    // Main method to get things started
    public static void main( String args[] )
    {
        // Create an instance of the test application
        Testdemo mainFrame  = new Testdemo();
        mainFrame.setVisible( true );
    }
}

[Prajin]

I don't understand your question?
This code does work fine. What's the exact problem?

-regards