JTable prepareRenderer not always working
/*
*
* Here I have a problem in the third column of the table:
*when selecting a line the rendereing only works when uncommenting the commented lines.
* Do I really have to duplicate the code of the prepareRenderer() method ?
*
*/
import java.awt.*;
import java.text.*;
import java.util.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.table.*;
publicclass TableRowRenderingextends JFrame{
public TableRowRendering(){
Object[] columnNames ={"Type","Date","Company","Shares","Price"};
Object[][] data =
{
{"Buy",new Date(),"IBM\nCorporation",new Integer(1000),new Double(80.50)},
{"Sell",new Date(),"MicroSoft",new Integer(2000),new Double(6.25)},
{"Sell",new Date(),"Apple",new Integer(3000),new Double(7.35)},
{"Buy",new Date(),"Nortel",new Integer(4000),new Double(20.00)}
};
DefaultTableModel model =new DefaultTableModel(data, columnNames){
public Class getColumnClass(int column){
return getValueAt(0, column).getClass();
}
};
table =new JTable( model ){
public Component prepareRenderer(
TableCellRenderer renderer,int row,int column){
Component c = super.prepareRenderer(renderer, row, column);
if (!isRowSelected(row))
c.setBackground(row % 2 == 0 ?new Color(237,243,254) :null );
return c;
}
};
table.setRowHeight(50);
table.getColumnModel().getColumn(2).setCellRenderer(new MyTableCellRenderer());
table.setPreferredScrollableViewportSize(table.getPreferredSize());
getContentPane().add(new JScrollPane( table ), BorderLayout.CENTER);
}
private JTable table;
publicstaticvoid main(String[] args){
TableRowRendering frame =new TableRowRendering();
frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
frame.pack();
frame.setLocationRelativeTo(null );
frame.setVisible(true);
}
publicclass MyTableCellRendererextends JTextAreaimplements TableCellRenderer{
public Component getTableCellRendererComponent( JTable table,
Object value,boolean isSelected,boolean hasFocus,
int row,int column ){
setText(value.toString());
//setBackground(row % 2 == 0 ? new Color(237,243,254) : null );
//if(isSelected) setBackground(table.getSelectionBackground());
//setBorder(hasFocus ? selected : null);
returnthis;
}
Border selected = BorderFactory.createLineBorder(new Color(99,130,191));
}
}
