Java tutorial
import java.awt.BorderLayout; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.table.DefaultTableModel; public class Main { public static void main(String[] args) throws InterruptedException { JFrame f = new JFrame(); DefaultTableModel m = new DefaultTableModel(); JTable t = new JTable(m); f.add(new JScrollPane(t), BorderLayout.CENTER); f.setVisible(true); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.pack(); m.addColumn("A"); m.addRow(new String[] { "A1" }); Thread.sleep(2000); m.addColumn("B"); m.addRow(new String[] { "A2", "B2" }); } }