Creating a Custom Cell Renderer in a JTable Component - Java Swing

Java examples for Swing:JTable Cell

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Description

Creating a Custom Cell Renderer in a JTable Component

Demo Code


import java.awt.Component;

import javax.swing.JLabel;
import javax.swing.JTable;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;

public class Main {
  public static void main(String[] args) {
    JTable table = new JTable();
    // Add data...

    // Install the custom renderer on the first visible column
    int vColIndex = 0;
    TableColumn col = table.getColumnModel().getColumn(vColIndex);
    col.setCellRenderer(new MyTableCellRenderer());

  }// w  ww  .  j  av  a 2  s .  co m
}

class MyTableCellRenderer extends JLabel implements TableCellRenderer {
  public Component getTableCellRendererComponent(JTable table, Object value,
      boolean isSelected, boolean hasFocus, int rowIndex, int vColIndex) {

    if (isSelected) {
      // cell (and perhaps other cells) are selected
    }

    if (hasFocus) {
      // this cell is the anchor and the table has the focus
    }

    // Configure the component with the specified value
    setText(value.toString());

    // Set tool tip if desired
    setToolTipText((String) value);

    // Since the renderer is a component, return itself
    return this;
  }

  // The following methods override the defaults for performance reasons
  public void validate() {
  }

  public void revalidate() {
  }

  protected void firePropertyChange(String propertyName, Object oldValue,
      Object newValue) {
  }

  public void firePropertyChange(String propertyName, boolean oldValue,
      boolean newValue) {
  }
}

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