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    <p>Yes, it is possible. For this case where you want that each Thread has its own Connection, you need to use <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/ThreadLocal.html" rel="nofollow">ThreadLocal</a>, since each request spawn its own Thread. You just need to make sure to close the connection at the end of the request, this is achieved using a <a href="http://docs.oracle.com/javaee/6/api/javax/servlet/Filter.html" rel="nofollow">Filter</a>.</p> <p>The filter should be before any other Filter to ensure that the connection is closed at the end of the request.</p> <p>DBUtil:</p> <pre><code>public class DBUtil { private static ThreadLocal&lt;Connection&gt; connectionHolder = new ThreadLocal&lt;Connection&gt;(); public static Connection getConnection() { Connection connection = connectionHolder.get(); if (connection == null) { //open the connection (lazy loaded) //store it connectionHolder.set(connection); } return connectionHolder.get(); } public static void close() { Connection connection = connectionHolder.get(); if (connection != null) { //close the connection //remove it from the connection holder connectionHolder.remove(); } } } </code></pre> <p><strong>DBFilter</strong>:</p> <pre><code>public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { try { chain.doFilter(request, response); } finally { DBUtil.close(); } } </code></pre> <p>It is better if you use a framework for these kind of things, for example <a href="http://projects.spring.io/spring-framework/" rel="nofollow">Spring Framework</a> already do this by proxying your services and it handles the connection and transaction also gives you a lot of other features.</p>
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    1. USAlfredo Osorio
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    1. COInteresting, so you're saying I could have a ThreadLocal db connection and then each time I called `Db.getConnection()`, it would return the unique / local db connection for the current request only? If so, can you give a bit more details on how to implement it, e.g in the filters? And then I can accept.
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    2. CO@ClickUpvote done. Anyway I'd recommend to use something more complete such as Spring which gives you this and Transaction features, so you don't need to made it yourself.
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    3. COThanks. Are you familiar with Struts? Struts 2 has an `ActionContext` whcih appears to be thread safe..
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