function buf = create_java_lang_stringbuffer ( str )
  len = length(str) ;
  unicode = uint8(zeros(2,len+1)) ;
  unicode(2,1:len) = uint8(str(:)) ;
  buf = uint8([172, 237, 0,   5,   115, 114, 0,   22, 106,  97,  \
	       118, 97,  46,  108, 97,  110, 103, 46,  83,  116, \
	       114, 105, 110, 103, 66,  117, 102, 102, 101, 114, \
	       47,  7,   7,   217, 234, 200, 234, 211, 3,   0,   \
	       3,   73,  0,   5,   99,  111, 117, 110, 116, 90,  \
	       0,   6,   115, 104, 97,  114, 101, 100, 91,  0,   \
	       5,   118, 97,  108, 117, 101, 116, 0,   2,   91,  \
	       67,  120, 112, 0,   0,   0,   len, 0,   117, 114, \
	       0,   2,   91,  67,  176, 38,  102, 176, 226, 93,  \
	       132, 172, 2,   0,   0,   120, 112, 0,   0,   0,   \
	       len+1, unicode(:)', 120 ]);                         
endfunction