Java Swing How to - Right justify number fields within Java JTable abstract model

Question

We would like to know how to right justify number fields within Java JTable abstract model.

Answer

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableCellRenderer;
//from www .  ja  va 2 s. co  m
public class Main {
  public static void main(String[] args) {
    String[] headers = { "column 1", "column 2", "column 3", "column 4" };
    int cols = 4;
    int rows = 6;
    String[][] data = new String[rows][cols];
    for (int row = 0; row < rows; row++){
      for (int col = 0; col < cols; col++){
        data[row][col] = "item " + (row * cols + col + 1);
      }
    }
    JTable table = new JTable(data, headers);
    DefaultTableCellRenderer renderer = (DefaultTableCellRenderer) table
        .getDefaultRenderer(String.class);
    renderer.setHorizontalAlignment(JLabel.RIGHT);
    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.getContentPane().add(new JScrollPane(table));
    f.setSize(400, 400);
    f.setLocation(200, 200);
    f.setVisible(true);
  }
}