Java DatabaseMetaData .getMaxColumnsInIndex ()

int getMaxColumnsInIndex()    throws SQLException

import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.DriverManager;
/*from   w  ww  .ja v  a  2  s . c o m*/
public class Main {

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

    DatabaseMetaData md = conn.getMetaData();
    System.out.println(md.getMaxColumnsInIndex());
    conn.close();
  }

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

}