Display Parameter information stored in the PreparedStatement : ParameterMetaData « Database « Java Tutorial

1. Java Tutorial
2. Database
3. ParameterMetaData

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.Statement;

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

    Statement st = conn.createStatement();

    st.executeUpdate("create table survey (id int,myDate DATE);");
    String INSERT_RECORD = "insert into survey(id, myDate) values(?, ?)";

    PreparedStatement pstmt = conn.prepareStatement(INSERT_RECORD);
    pstmt.setString(1, "1");
    java.sql.Date sqlDate = new java.sql.Date(new java.util.Date().getTime());
    pstmt.setDate(2, sqlDate);

    pstmt.executeUpdate();

    System.out.println("The type of the first parameter is: "
        + pstmt.getParameterMetaData().getParameterTypeName(1));
    System.out.println(pstmt.getParameterMetaData().isNullable(1));

    conn.close();
  }

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

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