在最终确定最佳实践中关闭连接？ [英] Is closing the connection in finalize best practice?

问题描述

可能重复：

为什么要实现finalize（）？

我看到一些java文件与以下代码：

  public void finalize（）{
 if（conn！= null）{
 try {
 conn.close（）; 
} catch（SQLException e）{
} 
} 
} 
  

• 在 finalize 方法最佳实践中关闭连接 / li>
  
• 是否足够关闭连接或者需要关闭其他对象，例如 PreparedStatement ？

从Java 7，关闭资源的最佳实践是使用try-with-resource：





http://docs.oracle.com/javase/tutorial/essential/exceptions/tryResourceClose.html




Possible Duplicate:
Why would you ever implement finalize()?

I saw some java files with the following code:

public void finalize() {
    if (conn != null) {
        try {
            conn.close();
        } catch (SQLException e) {
        }
    }
}

• Is closing a Connection in the finalize method best practice?
• Is it enough to close the Connection or does one need to also close other objects such as PreparedStatement?

解决方案

From Java 7, the best practice for closing a resource is to use a try-with-resource :

http://docs.oracle.com/javase/tutorial/essential/exceptions/tryResourceClose.html

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