Java Utililty Methods File Extension Name Extract

List of utility methods to do File Extension Name Extract

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Description

The list of methods to do File Extension Name Extract are organized into topic(s).

Method

StringgetFileExtension(File file)
Utility method that gets the extension of a file from its name if it has one 
try {
    return getFileExtension(file.getCanonicalPath());
} catch (IOException e) {
    return "";
StringgetFileExtension(File file)
Gets the file extension as a string. 
String fileName = file.getName();
return (fileName.lastIndexOf(".") == -1) ? ""
        : fileName.substring(fileName.lastIndexOf(".") + 1, fileName.length());
StringgetFileExtension(File file)
get File Extension 
return getFileExtension(file.getPath());
StringgetFileExtension(File file, boolean includeDelimiter)
Return the extension part given file name. 
String result = "";
if (file != null) {
    String absoluteName = file.getAbsolutePath();
    if (absoluteName != null) {
        int delimIndex = absoluteName.lastIndexOf(".");
        if (delimIndex != -1) {
            if (!includeDelimiter) {
                delimIndex++;
...
StringgetFileExtension(File fx)
get File Extension 
String path = null;
try {
    path = fx.getCanonicalPath();
} catch (IOException e1) {
    path = fx.getAbsolutePath();
return getFileExtension(path);
StringgetFileExtension(File path)
get File Extension 
if (path == null)
    return null;
return getFileNameExtension(path.getName());
StringgetFileExtension(final String fileName)
Identifies the file extension for a given file name and returns the extension part, or an empty string if the file has no extension. 
return getFileExtension(File.separatorChar, fileName);
StringgetFileExtension(final String filenamePath)
Retourniert Dateiendung (mit Punkt). 
String filename = getFilename(filenamePath);
if (filename.lastIndexOf(".") > 0) { 
    return filename.substring(filename.lastIndexOf("."), filename.length()); 
return "";
StringgetFileExtension(String filename)
get File Extension 
String extension = "";
int index = filename.lastIndexOf('.');
if (index != -1)
    extension = filename.substring(index);
return extension;
StringgetFileExtension(String fileName)
Returns file's extention. 
String ext = null;
if (fileName.lastIndexOf(".") > 0 && fileName.lastIndexOf(".") < fileName.length()) {
    ext = fileName.substring(fileName.lastIndexOf(".") + 1);
return ext;