Get column names of a table using ResultSetMetaData in Java

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.Statement;
import java.util.ArrayList;
//w w  w  .j  a v a 2 s .  c  o  m
public class Main {
  public static void main(String[] args) throws Exception {
    Connection connection = getConnection();

    Statement statement = connection.createStatement();
    ResultSet resultSet = statement.executeQuery("SELECT * FROM users");

    ResultSetMetaData metadata = resultSet.getMetaData();
    int columnCount = metadata.getColumnCount();

    ArrayList<String> columns = new ArrayList<String>();
    for (int i = 1; i < columnCount; i++) {
      String columnName = metadata.getColumnName(i);
      columns.add(columnName);
    }

    while (resultSet.next()) {
      for (String columnName : columns) {
        String value = resultSet.getString(columnName);
        System.out.println(columnName + " = " + value);
      }
    }
  }

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

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