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    <p>That depends on what you mean. If you just want to get rid of them, do this:<br> <em>(Update: Apparently you want to keep digits as well, use the second lines in that case)</em></p> <pre><code>String alphaOnly = input.replaceAll("[^a-zA-Z]+",""); String alphaAndDigits = input.replaceAll("[^a-zA-Z0-9]+",""); </code></pre> <p>or the equivalent:</p> <pre><code>String alphaOnly = input.replaceAll("[^\\p{Alpha}]+",""); String alphaAndDigits = input.replaceAll("[^\\p{Alpha}\\p{Digit}]+",""); </code></pre> <p>(All of these can be significantly improved by precompiling the regex pattern and storing it in a constant)</p> <p>Or, with <a href="http://code.google.com/p/guava-libraries/" rel="noreferrer">Guava</a>:</p> <pre><code>private static final CharMatcher ALNUM = CharMatcher.inRange('a', 'z').or(CharMatcher.inRange('A', 'Z')) .or(CharMatcher.inRange('0', '9')).precomputed(); // ... String alphaAndDigits = ALNUM.retainFrom(input); </code></pre> <p>But if you want to turn accented characters into something sensible that's still ascii, look at these questions:</p> <ul> <li><a href="https://stackoverflow.com/questions/3707977/converting-java-string-to-ascii/3708078#3708078">Converting Java String to ASCII</a></li> <li><a href="https://stackoverflow.com/questions/4122170/java-change-aeou-to-aeouu/4122207#4122207">Java change áéőűú to aeouu</a></li> <li><a href="https://stackoverflow.com/questions/1453171/n---n------------n-or-remove-diacritical-marks-from">ń ǹ ň ñ ṅ ņ ṇ ṋ ṉ ̈ ɲ ƞ ᶇ ɳ ȵ --> n or Remove diacritical marks from unicode chars</a></li> </ul>
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    1. POHow to replace special characters in a string?
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    1. COThanks Floydit it is working fine.but one problem is there
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    2. COwhen i am using this function it is removing all numbers as well.but i dont want numbers to remove.just want to remove special characters.Please suggest something..
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    3. COwell you said you only wanted the alphabet. But I'll update my answer in a minute
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