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    <p>Explaining:</p> <ul> <li><code>&lt;img</code> matches exactly the string <code>"&lt;img"</code></li> <li><code>[^&gt;]+</code> matches multiple times of everything but <code>&gt;</code>, so the tag will not be closed</li> <li><code>src</code> matches exactly the string "src"</li> <li><code>\\s*</code> matches any number of whitespace characters</li> <li><code>=</code> matches exactly the string "="</li> <li><code>\\s*</code> matches any number of whitespace characters</li> <li><code>['\"]</code> matches the two quotes. The double quote is escaped, because otherwise it will terminate the string of the regex</li> <li><code>([^'\"]+)</code> mathches multiple times everything but quotes. The contents are wrapped in brackets, so that they are declared as group and can be retrieved later</li> <li><code>['\"]</code> matches the two quotes. The double quote is escaped, because otherwise it will terminate the string of the regex</li> <li><code>[^&gt;]*</code> matches the remaining non <code>"&gt;"</code> characters</li> <li><code>&gt;</code> matches exactly the string <code>"&gt;"</code>, the closing bracket of the tag.</li> </ul> <p>I would not agree this expression is a crap, just a bit complex.</p> <p><strong>EDIT</strong> Here you go some examplary code:</p> <pre><code>String str = "&lt;img[^&gt;]+src\\s*=\\s*['\"]([^'\"]+)['\"][^&gt;]*&gt;"; String text = "&lt;img alt=\"booo\" src=\"image.jpg\"/&gt;"; Pattern pattern = Pattern.compile (str); Matcher matcher = pattern.matcher (text); if (matcher.matches ()) { int n = matcher.groupCount (); for (int i = 0; i &lt;= n; ++i) System.out.println (matcher.group (i)); } </code></pre> <p>The output is:</p> <pre><code>&lt;img alt="booo" src="image.jpg"/&gt; image.jpg </code></pre> <p>So <code>matcher.group(1)</code> returns what you want. experiment a bit with this code.</p>
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    1. COThanks, that really helps -> thus ([^'\"]+) is the value of src right? may i know how to i reference to ([^'\"]+) ? i know we can use something like $1, $2.. to do so, is it right?
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    2. COAdded some code to show you how to fetch the needed content.
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