Chaining SQLExceptions : SQLException Warning « Database « Java Tutorial

1. Java Tutorial
2. Database
3. SQLException Warning

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;

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

      conn.setAutoCommit(false);
      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 = conn.createStatement();
      ResultSet rs = st.executeQuery("SELECT * FROM survey");

      outputResultSet(rs);

      rs.close();
      st.close();
      conn.close();
    } catch (SQLException sqle) {
      do { // loop through each exception
        // do something with each exception
        System.err.println("Exception occurred:\nMessage: " + sqle.getMessage());
        System.err.println("SQL state: " + sqle.getSQLState());
        System.err.println("Vendor code: " + sqle.getErrorCode() + "\n----------------");
      } while ((sqle = sqle.getNextException()) != null);
    }
  }

  private static void outputResultSet(ResultSet rs) throws Exception {
    ResultSetMetaData rsMetaData = rs.getMetaData();
    int numberOfColumns = rsMetaData.getColumnCount();
    for (int i = 1; i < numberOfColumns + 1; i++) {
      String columnName = rsMetaData.getColumnName(i);
      System.out.print(columnName + "   ");

    }
    System.out.println();
    System.out.println("----------------------");

    while (rs.next()) {
      for (int i = 1; i < numberOfColumns + 1; i++) {
        System.out.print(rs.getString(i) + "   ");
      }
      System.out.println();
    }

  }

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

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