StackOverflow2013

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POEffective way to build a list of tokens from multiple strings in Java
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copied!<p>I'm looking for an efficient way to obtain a list of String tokens extracted from multiple Strings (e.g. with a whitespace separator).</p> <p>Example:</p> <pre><code>String s1 = "My mom cook everyday"; String s2 = "I eat everyday"; String s3 = "Am I fat?"; LinkedList<String> tokens = new LinkedList<String>(); //any code to efficiently get the tokens //final result is tokens make of a list of the following tokens: //"My", "mom", "cook", "everyday", "I", "eat", "everyday", "Am", "I", "fat?". </code></pre> <p>Now</p> <ol> <li>I'm not sure that <code>LinkedList</code> is the most effective collection class to be used (Apache Commons, Guava, may they help?)!</li> <li>I was going to use <code>StringUtils</code> from Apache Commons, but the <code>split</code> method returns an array! So, I should extract with a for cycle the Strings from the array of String objects returned by split. Is that efficient: I don't know, <code>split</code> creates an array!</li> <li>I read about <code>Splitter</code> from Guava, but <a href="http://tomjefferys.blogspot.it/2012/02/guava-splitter-vs-stringutils.html" rel="nofollow">this post</a> states that <code>StringUtils</code> is better in practice.</li> <li>What about <code>Scanner</code> from <code>Java.util</code>. It seems to not allocate any additional data structures. Isn't it?</li> </ol> <p>Please, draw the most efficient Java solution, even by using additional widely used library, like <em>Guava</em> and <em>Apache Commons</em>.</p>

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