question: public static String tabsToSpaces ( String in , int tabSize ) { StringBuilder buf = new StringBuilder ( ) ; int width = 0 ; for ( int i = 0 ; i < in . length ( ) ; i ++ ) { switch ( in . charAt ( i ) ) { case '\t' : int count = tabSize - ( width % tabSize ) ; width += count ; while ( -- count >= 0 ) buf . append ( ' ' ) ; break ; case '\n' : width = 0 ; buf . append ( in . charAt ( i ) ) ; break ; default : width ++ ; buf . append ( in . charAt ( i ) ) ; break ; } } return buf . toString ( ) ; }
target:  Converts tabs to consecutive spaces in the specified string.