Source Code : Creating a Class-Based Custom Cell Renderer in a JTable Component

Java Is Open Source Programming Language You Can Download From Java and Java Libraries From http://www.oracle.com. Click Here to download
We provide this code related to title for you to solve your developing problem easily. Libraries which is import in this program you can download from http://www.oracle.com. Click Here or search from google with Libraries Name you get jar file related it

Creating a Class-Based Custom Cell Renderer in a JTable Component

 

import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;

public class Main {
  public static void main(String[] argv) {
    DefaultTableModel model = new DefaultTableModel() {
      public Class getColumnClass(int mColIndex) {
        int rowIndex = 0;
        Object o = getValueAt(rowIndex, mColIndex);
        if (o == null) {
          return Object.class;
        } else {
          return o.getClass();
        }
      }
    };
    JTable table = new JTable(model);
    model.addColumn("Col1", new Object[] { Color.red });
    model.addRow(new Object[] { Color.green });
    model.addRow(new Object[] { Color.blue });

    table.setDefaultRenderer(Color.class, new ColorTableCellRenderer());
    
    JFrame f = new JFrame();
    f.setSize(300,300);
    f.add(new JScrollPane(table));
    f.setVisible(true);
  }
}

class ColorTableCellRenderer extends JLabel implements TableCellRenderer {
  Color curColor;
  public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected,
      boolean hasFocus, int rowIndex, int vColIndex) {
    if (curColor instanceof Color) {
      curColor = (Color) value;
    } else {
      curColor = table.getBackground();
    }
    return this;
  }

  public void paint(Graphics g) {
    g.setColor(curColor);
    g.fillRect(0, 0, getWidth() - 1, getHeight() - 1);
  }
}

   
  

Thank with us