Java File getFileExtension() Utility Method - Get file extension such as "txt","png","pdf".
Java File getFileExtension() Utility Method - Get file extension such as "txt","png","pdf"
/**
* Get file extension such as "txt","png","pdf"
* @param file
* @return
*/
public static String getFileExtension(File file) {
String fileName = file.getName();
if (fileName.lastIndexOf('.') != -1 && fileName.lastIndexOf('.') != 0) {
return fileName.substring(fileName.lastIndexOf('.') + 1);
} else {
return "File don't have extension";
}
}
/**
* Get file extension such as "txt","png","pdf"
* @param file
* @return
*/
public static String getFileExtension(File file) {
String fileName = file.getName();
if (fileName.lastIndexOf('.') != -1 && fileName.lastIndexOf('.') != 0) {
return fileName.substring(fileName.lastIndexOf('.') + 1);
} else {
return "File don't have extension";
}
}
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