Get all column names

import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.DriverManager;
import java.sql.ResultSet;
/*from   ja va2s  .  c o  m*/
public class Main {

  public static void main(String[] args) throws Exception {
    Connection conn = getHSQLConnection();

    DatabaseMetaData md = conn.getMetaData();

    ResultSet r = md.getColumns("", "", "yourTableName", "%");
    while (r.next())
        System.out.println("\t" + r.getString(4) + " : "
                + r.getString(6));

    conn.close();
  }

  private static Connection getHSQLConnection() throws Exception {
    Class.forName("org.hsqldb.jdbcDriver");
    String url = "jdbc:hsqldb:data/tutorial";
    return DriverManager.getConnection(url, "sa", "");
  }

}