public static void main(String arg[]) {

		Connection conn = null;
		Statement stmt = null;
		try {
			// STEP 2: Register JDBC driver
			Class.forName("com.mysql.jdbc.Driver");

			// STEP 3: Open a connection
			System.out.println("Connecting to database...");
			conn = DriverManager.getConnection(DB_URL, USER, PASS);

			// STEP 4: Execute a query
			System.out.println("Creating statement...");
			stmt = conn.createStatement();
			String sql;
			sql = "SELECT * FROM User";
			ResultSet rs = stmt.executeQuery(sql);

			// STEP 5: Extract data from result set
			while (rs.next()) {
				// Retrieve by column name
				int id = rs.getInt("userid");
				String first = rs.getString("firstname");
				String last = rs.getString("lastname");

				// Display values
				System.out.print("ID: " + id);

				System.out.print(", First: " + first);
				System.out.println(", Last: " + last);
			}
			// STEP 6: Clean-up environment
			rs.close();
			stmt.close();
			conn.close();
		} catch (SQLException se) {
			// Handle errors for JDBC
			se.printStackTrace();
		} catch (Exception e) {
			// Handle errors for Class.forName
			e.printStackTrace();
		} finally {
			// finally block used to close resources
			try {
				if (stmt != null)
					stmt.close();
			} catch (SQLException se2) {
			}// nothing we can do
			try {
				if (conn != null)
					conn.close();
			} catch (SQLException se) {
				se.printStackTrace();
			}// end finally try
		}// end try
		System.out.println("Goodbye!");

	}