hi
I want to change the color of entire row red.
I already use prepare renderer for this.
but the actual problem is
red color doesn't reflect in Jtable.
but if i check cell's color it shows red.
please help me in this regard.
i need solution urgently.
thanks
this is my code it actuaaly works only setforeground() method is not working here
public class MyTableEstimatedRenderer extends DefaultTableCellRenderer
{
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int rowno,int colno)
{
Component cell=null;
System.out.println("cell before"+cell);
cell =super.getTableCellRendererComponent(table,value,isSelected,hasFocus,rowno,colno);
cell.setForeground(Color.red);
return cell;
}
}
and i call renderer like this:
//priceTable is object of Jtable
Component c = priceTable.prepareRenderer(renderer,rowno,colno);
take a look at this example:
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableModel;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.MouseEvent;
public class TableToolTipsDemo extends JPanel {
private boolean DEBUG = false;
protected String[] columnToolTips = { null, null, "The person's favorite sport to participate in", "The number of years the person has played the sport", "If checked, the person eats no meat" };
public TableToolTipsDemo() {
super(new GridLayout(1, 0));
JTable table = new MyTable(new MyTableModel()) {
// Implement table cell tool tips.
public String getToolTipText(MouseEvent e) {
String tip = null;
java.awt.Point p = e.getPoint();
int rowIndex = rowAtPoint(p);
int colIndex = columnAtPoint(p);
int realColumnIndex = convertColumnIndexToModel(colIndex);
if (realColumnIndex == 2) { // Sport column
tip = "This person's favorite sport to " + "participate in is: " + getValueAt(rowIndex, colIndex);
} else if (realColumnIndex == 4) { // Veggie column
TableModel model = getModel();
String firstName = (String) model.getValueAt(rowIndex, 0);
String lastName = (String) model.getValueAt(rowIndex, 1);
Boolean veggie = (Boolean) model.getValueAt(rowIndex, 4);
if (Boolean.TRUE.equals(veggie)) {
tip = firstName + " " + lastName + " is a vegetarian";
} else {
tip = firstName + " " + lastName + " is not a vegetarian";
}
} else {
// You can omit this part if you know you don't
// have any renderers that supply their own tool
// tips.
tip = super.getToolTipText(e);
}
return tip;
}
// Implement table header tool tips.
protected JTableHeader createDefaultTableHeader() {
return new JTableHeader(columnModel) {
public String getToolTipText(MouseEvent e) {
String tip = null;
java.awt.Point p = e.getPoint();
int index = columnModel.getColumnIndexAtX(p.x);
int realIndex = columnModel.getColumn(index).getModelIndex();
return columnToolTips[realIndex];
}
};
}
};
table.setPreferredScrollableViewportSize(new Dimension(500, 70));
//table.setFillsViewportHeight(true);
// Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(table);
// Add the scroll pane to this panel.
add(scrollPane);
}
class MyTable extends JTable{
public MyTable(){}
public MyTable(TableModel dm){
super(dm);
}
public Component prepareRenderer(TableCellRenderer renderer, int rowIndex, int vColIndex) {
Component c = super.prepareRenderer(renderer, rowIndex, vColIndex);
if (c instanceof JComponent) {
JComponent jc = (JComponent) c;
//jc.setToolTipText((String) getValueAt(rowIndex, vColIndex));
if(this.getSelectedRow()==rowIndex){
jc.setForeground(Color.RED);
}else{
jc.setForeground(Color.YELLOW);
}
}
return c;
}
}
class MyTableModel extends AbstractTableModel {
private String[] columnNames = { "First Name", "Last Name", "Sport", "# of Years", "Vegetarian" };
private Object[][] data = { { "Mary", "Campione", "Snowboarding", new Integer(5), new Boolean(false) }, { "Alison", "Huml", "Rowing", new Integer(3), new Boolean(true) },
{ "Kathy", "Walrath", "Knitting", new Integer(2), new Boolean(false) }, { "Sharon", "Zakhour", "Speed reading", new Integer(20), new Boolean(true) },
{ "Philip", "Milne", "Pool", new Integer(10), new Boolean(false) } };
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];
}
/*
* JTable uses this method to determine the default renderer/ editor for each cell. If we didn't implement this method, then the last column would contain text ("true"/"false"), rather than a
* check box.
*/
public Class getColumnClass(int c) {
return getValueAt(0, c).getClass();
}
/*
* Don't need to implement this method unless your table's editable.
*/
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;
}
}
/*
* Don't need to implement this method unless your table's data can change.
*/
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() + ")");
}
data[row][col] = value;
fireTableCellUpdated(row, col);
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("--");
}
}
/**
* Create the GUI and show it. For thread safety, this method should be invoked from the event-dispatching thread.
*/
private static void createAndShowGUI() {
// Create and set up the window.
JFrame frame = new JFrame("TableToolTipsDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Create and set up the content pane.
JComponent newContentPane = new TableToolTipsDemo();
newContentPane.setOpaque(true); // content panes must be opaque
frame.setContentPane(newContentPane);
// Display the window.
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
// Schedule a job for the event-dispatching thread:
// creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}
class MyTable extends JTable{
public MyTable(){}
public MyTable(TableModel dm){
super(dm);
}
public Component prepareRenderer(TableCellRenderer renderer, int rowIndex, int vColIndex) {
Component c = super.prepareRenderer(renderer, rowIndex, vColIndex);
if (c instanceof JComponent) {
JComponent jc = (JComponent) c;
//jc.setToolTipText((String) getValueAt(rowIndex, vColIndex));
if(this.getSelectedRow()==rowIndex){
jc.setForeground(Color.RED);
}else{
jc.setForeground(Color.YELLOW);
}
}
return c;
}
}
i also try this way to call renderer but the problem here is it doesn't call preparerenderer method here.
whatever i write in prepare renderer it doesn't execute not even a print method.
