question: private static String removeTrailingSpace ( String raw ) { char c ; int i = raw . length ( ) - 1 ; for ( ; i >= 0 ; i -- ) { c = raw . charAt ( i ) ; if ( c != ' ' && c != '\t' ) { break ; } } return raw . substring ( 0 , i + 1 ) ; }
target:  Remove trailing space and tab from the raw String and return the new String.