我对上述问题有另一种解决方案。在我的例子中，我有一个包含 10 列的 JTable。我只想根据输入的标记突出显示单元格行的某个子集。在下面附加的示例屏幕截图中，我输入了 Mark 167 并按下了 Find All 按钮。这样做时，单元格渲染器突出显示了单元格子集。即Script No、Candidate、Mark和Grade为了实现这一点，我创建了用于扩展 DefaultCellRenderer 的单元格渲染器。我已经取出了一些与问题无关的代码，因此它可能无法编译。尽管如此，您还是可以大致了解问题的解决方案：
import java.awt.Component;
import java.awt.Color;
import javax.swing.JTable;
import javax.swing.table.DefaultTableCellRenderer;
/*
*
* This class is the Color Renderer for the "Find All" Button.
* It basically highlights all of the scripts with a certain color
* This renderer is responsible Highlighting the JTable.
* Based on the particular Mark that has been entered in the find all
* text field
*
*
*/
public class MarkSearchColorCellRenderer extends DefaultTableCellRenderer
implements ColorCellRenderer, GradeValidation
{
public MarkSearchColorCellRenderer(int aMark, Color aColor)
{
the_Mark = aMark;
theColor = aColor;
}
@Override
public Component getTableCellRendererComponent(JTable table, Object
value, boolean isSelected, boolean hasFocus, int row, int column)
{
Component cell = super.getTableCellRendererComponent(table,
value, isSelected, hasFocus, row, column);
setHorizontalAlignment(RIGHT);
if ( column == 0 ) // script no column
{
//check the current Mark within this row
//i.e. for this particular candidate
Object curMark = table.getValueAt(row, column+2);
//highlight this cell a certain color if the
//search mark has been found for this particular candidate
highlightScripts(curMark, cell);
}
else if(column == 1) // Candidate No. Column
{
Object curMark = table.getValueAt(row, column+1);
highlightScripts(curMark, cell);
}
else if ( column == 2 ) // mark column
{
Object curMark = value;
highlightScripts(curMark, cell);
}
else if (column == 3) // Grade Column
{
setHorizontalAlignment(LEFT);
Object curMark = table.getValueAt(row, column-1);
highlightScripts(curMark, cell);
}
else if (column == 5) // script no column
{
Object curMark = table.getValueAt(row, column+2);
highlightScripts(curMark, cell);
}
else if( column == 6) // Candidate No. Column
{
Object curMark = table.getValueAt(row, column+1);
highlightScripts(curMark, cell);
}
else if ( column == 7) // mark column
{
Object curMark = value;
highlightScripts(curMark, cell);
}
else if ( column == 8) // Grade Column
{
setHorizontalAlignment(LEFT);
Object curMark = table.getValueAt(row, column-1);
highlightScripts(curMark, cell);
}
else
{
// Should never arrive here.
// If it does, then you've rendered a column that may not
// function with this class
// therefore, I'm going to exit the program
//System.exit(0);
}
table.repaint();
return cell;
} // end getTableCellRendererComponent()
// Change the color of this cell if the aValue matches
// the value within the particular cell
private void highlightScripts(Object aValue, Component aCell)
{
Object value = aValue;
Component cell = aCell;
if ( value != null )
{
if (value instanceof Integer )
{
Integer amount = (Integer) value;
if( amount.intValue() == the_Mark )
{
cell.setBackground( theColor );
}
else
{
cell.setBackground( Color.white );
}
}
}
else
{
cell.setBackground( Color.white );
}
}// end highlightScripts()
}//end class
/*
*
* Inside the "Find All" button listener you would attach the
* MarkSearchColorCellRenderer to selected JTable columns.
* A snippet of the code is as follows:
*
*/
// select a color
Color myMarkColor = new Color(226,182,90);
// the mark to search
Integer markToSearch =
new Integer(find_mark_jTextField.getText());
//an instance of the class MarkSearchColorCellRenderer (outlined above)
MarkSearchColorCellRenderer my_MarkSearch_CellRenderer =
new MarkSearchColorCellRenderer(
markToSearch.intValue(),myMarkColor);
/*
*
* Get the all the Table columns of the JTable on which you wish to assign
* the particular cell renderer. In my example I have 8 table column's
* that I wish to assign the cell renderer
* i.e. Script, Candidate, Mark, Grade Script, Candidate, Mark, Grade
*
* On looking at the screenshot I've ignored the monitor column (check box)
*/
TableColumn script_column_100_A = first_100_Table.getColumnModel().getColumn(0);
TableColumn candidate_column_100_A = first_100_Table.getColumnModel().getColumn(1);
TableColumn mark_column_100_A = first_100_Table.getColumnModel().getColumn(2);
TableColumn grade_column_100_A = first_100_Table.getColumnModel().getColumn(3);
TableColumn script_column_100_B = first_100_Table.getColumnModel().getColumn(5);
TableColumn candidate_column_100_B = first_100_Table.getColumnModel().getColumn(6);
TableColumn mark_column_100_B = first_100_Table.getColumnModel().getColumn(7);
TableColumn grade_column_100_B = first_100_Table.getColumnModel().getColumn(8);
/*
*
* assign the MarkSearchColorCellRenderer to each of the choosen table column's.
*
* i.e. Script, Candidate, Mark, Grade Script, Candidate, Mark, Grade
*
*/
script_column_100_A.setCellRenderer(my_MarkSearch_CellRenderer );
script_column_100_A.setCellRenderer(my_MarkSearch_CellRenderer );
candidate_column_100_A.setCellRenderer(my_MarkSearch_CellRenderer );
mark_column_100_A.setCellRenderer(my_MarkSearch_CellRenderer );
grade_column_100_A.setCellRenderer(my_MarkSearch_CellRenderer );
script_column_100_B.setCellRenderer(my_MarkSearch_CellRenderer );
candidate_column_100_B.setCellRenderer(my_MarkSearch_CellRenderer );
mark_column_100_B.setCellRenderer(my_MarkSearch_CellRenderer );
grade_column_100_B.setCellRenderer(my_MarkSearch_CellRenderer );
this.repaint();