Java JTable change cell color

Question

I would like to make an editable table and then check the data to make sure its valid. Im not sure how to change the color of just one cell. I would like to get a cell, for

Answer 1

This is the simplest way to color a particular Column or cell in a jTable.

First just create a simple class of CustomRenderer

class CustomRenderer extends DefaultTableCellRenderer 

{
    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column)
    {
        Component c = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
        setForeground(Color.blue); >
        return c;
    }
}

This code gets the column of cell to render

TableColumn col = tblExamHistoryAll.getColumnModel().getColumn(5);
DefaultTableModel model3 = (DefaultTableModel)tblExamHistoryAll.getModel();
col.setCellRenderer(new CustomRenderer());

This is to clear all previous rows from your table. If you do not want them just remove these lines

model3.getDataVector().removeAllElements();
model3.fireTableDataChanged();