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geolimber/ExtensionChecker.java

Last active February 5, 2018 16:46
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Simple java class to get file extension
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ExtensionChecker.java
/**
* Simple java class to get file extension.
* Returns null if file starts with point, like .htaccess, and if the file don't have any extension.
* Created by Sergio Marchenko on 05-05-2017.
*/
public class ExtensionChecker {
public static String getFileExtension(String fileName) {
if (!fileName.startsWith(".") && fileName.contains(".")) {
return fileName.substring(fileName.lastIndexOf(".") + 1);
}
else return null;
}
}
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