Here you can find the source of close(Connection connection)
public static void close(Connection connection)
//package com.java2s; /**************************************************************** * Licensed to the AOS Community (AOS) under one or more * * contributor license agreements. See the NOTICE file * * distributed with this work for additional information * * regarding copyright ownership. The AOS licenses this file * * to you under the Apache License, Version 2.0 (the * * "License"); you may not use this file except in compliance * * with the License. You may obtain a copy of the License at * * * * http://www.apache.org/licenses/LICENSE-2.0 * * * * Unless required by applicable law or agreed to in writing, * * software distributed under the License is distributed on an * * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * * KIND, either express or implied. See the License for the * * specific language governing permissions and limitations * * under the License. * ****************************************************************/ import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; public class Main { /**/*from w w w . j a va2s .c om*/ * Close a result set */ public static void close(ResultSet results) { try { if (results != null) results.close(); } catch (SQLException exception) { } } /** * Close a connection */ public static void close(Connection connection) { try { if (connection != null) { connection.close(); } } catch (SQLException e) { e.printStackTrace(); } } /** * Close a prepared statement */ public static void close(PreparedStatement stmt) { try { if (stmt != null) stmt.close(); } catch (SQLException e) { e.printStackTrace(); } } /** * Close all resources */ public static void close(Connection connection, PreparedStatement stmt, ResultSet results) { close(results); close(stmt); close(connection); } }