question: public ByteOrderMark ( String charsetName , int ... bytes ) { if ( charsetName == null || charsetName . length ( ) == 0 ) { throw new IllegalArgumentException ( "No charsetName specified" ) ; } if ( bytes == null || bytes . length == 0 ) { throw new IllegalArgumentException ( "No bytes specified" ) ; } this . charsetName = charsetName ; this . bytes = new int [ bytes . length ] ; System . arraycopy ( bytes , 0 , this . bytes , 0 , bytes . length ) ; }
target:  Construct a new BOM.