public static String getFilename(String path) {
        if (path == null) {
            return null;
        }
        int separatorIndex = path.lastIndexOf(StringPool.SLASH);
        return (separatorIndex != -1 ? path.substring(separatorIndex + 1) : path);
    }
public static String getFilename(String path) {
        if (path == null) {
            return null;
        }
        int separatorIndex = path.lastIndexOf(StringPool.SLASH);
        return (separatorIndex != -1 ? path.substring(separatorIndex + 1) : path);
    }
public static String getFilename ( String path ) { if ( path == null ) { return null ; } int separatorIndex = path . lastIndexOf ( StringPool . SLASH ) ; return ( separatorIndex != - 1 ? path . substring ( separatorIndex + 1 ) : path ) ; }
Extract the filename from the given path,
e.g. "mypath/myfile.txt" -> "myfile.txt".

@param path the file path (may be {@code null})
@return the extracted filename, or {@code null} if none
Extract the filename from the given path e . g . mypath / myfile . txt - > myfile . txt .