import java.awt.Component;
import javax.swing.JComponent;
import javax.swing.JTable;
import javax.swing.table.TableCellRenderer;
public class Main {
public static void main(String[] argv) throws Exception {
JTable table = new JTable() {
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));
}
return c;
}
};
}
}