import javax.swing.JTable; public class Main { public static void main(String[] argv) throws Exception { Object[][] cellData = { { "1-1", "1-2" }, { "2-1", "2-2" } }; String[] columnNames = { "col1", "col2" }; JTable table = new JTable(cellData, columnNames); table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF); } }