a null-safe trim method . if the input string is null , returns null ; otherwise returns a trimmed version of the input . concode_field_sep String COMMA_SEPARATOR concode_elem_sep Charset UTF8 concode_elem_sep String DEFAULT_ENCODING concode_field_sep boolean isNullOrEmpty concode_elem_sep String fromBigDecimal concode_elem_sep String replace concode_elem_sep BigInteger toBigInteger concode_elem_sep String fromLong concode_elem_sep BigDecimal toBigDecimal concode_elem_sep String fromBoolean concode_elem_sep String fromBigInteger concode_elem_sep String fromDate concode_elem_sep Integer toInteger concode_elem_sep String fromByteBuffer concode_elem_sep Boolean toBoolean concode_elem_sep String fromInteger concode_elem_sep String fromFloat concode_elem_sep String fromDouble concode_elem_sep String toString concode_elem_sep String fromByte concode_elem_sep String fromString concode_elem_sep String join
String function ( String arg0 ) { if ( arg0 == null ) { return null ; } return arg0 . trim ( ) ; }