Taking File name from Absolute Path

Exact file name extraction is required many times, when dealing with files

public static String extractFileName(String absoluteFileName) {  

 if (!isNullOrEmpty(absoluteFileName)) {  
  //File with the absolute path
  absoluteFileName = absoluteFileName.substring(absoluteFileName  
    .lastIndexOf(File.separatorChar) + 1, absoluteFileName.lastIndexOf("."));  
  //File name extracted the absolute path
 }  
 return absoluteFileName;  
}