Java ResultSet.getInt(String columnLabel)

int getInt(String columnLabel)  throws SQLException

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
//from w  w  w  .j ava  2  s.com
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,name varchar(30));");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");
    st.executeUpdate("insert into survey (id,name ) values (2,null)");
    st = conn.createStatement();
    ResultSet rs = st.executeQuery("SELECT * FROM survey");
    
    // extract data from the ResultSet
    while (rs.next()) {
        int id = rs.getInt("id");
        System.out.println("id="+id);
        String name = rs.getString(2);
        System.out.println("name="+name);
        if (rs.wasNull()) {
            System.out.println("name is null");
        } else {
             System.out.println("name is not null");
        }
        System.out.println("---------------");
    }
    rs.close();
    st.close();
    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", "");
  }
}