removes control characters char < = 32 from both ends of this string , handling null by returning null . the string is trimmed using string #trim . trim removes start and end characters < = 32 . to strip whitespace use #strip string . to trim your choice of characters , use the #strip string , string methods . stringutils.trim null = null stringutils.trim '' '' = '' '' stringutils.trim '' '' = '' '' stringutils.trim `` abc '' = `` abc '' stringutils.trim '' abc '' = `` abc '' concode_field_sep PlaceHolder placeHolder concode_field_sep byte[] getBytesUtf8 concode_elem_sep String newStringUtf8 concode_elem_sep boolean equals concode_elem_sep boolean isEmpty concode_elem_sep String removeEnd concode_elem_sep String removeStart concode_elem_sep boolean equalsIgnoreCase concode_elem_sep byte[] getBytes concode_elem_sep String newString
String function ( String arg0 ) { return arg0 == null ? null : arg0 . trim ( ) ; }