Call a procedure with one IN/OUT parameter in Java

import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Types;
/*from   w  w  w . ja v a 2 s . c o m*/
public class Main {
  public static void main(String[] args) throws Exception {
    Connection connection = getConnection();
    CallableStatement cs = connection.prepareCall("{call myprocinout(?)}");
    
    // Register the type of the IN/OUT parameter
    cs.registerOutParameter(1, Types.VARCHAR);

    // Set the value for the IN/OUT parameter
    cs.setString(1, "a string");

    // Execute the stored procedure and retrieve the IN/OUT value
    cs.execute();
    String outParam = cs.getString(1);            // OUT parameter
    System.out.println(outParam);

  }

  private static Connection getConnection() throws Exception {
    Class.forName("org.hsqldb.jdbcDriver");
    String url = "jdbc:hsqldb:mem:data/tutorial";

    return DriverManager.getConnection(url, "sa", "");
  }
}