stringConcatenationBytecodeBadWay

   0:	ldc	#2; //String 
   2:	astore_1
   3:	iconst_0
   4:	istore_2
   5:	iload_2
   6:	sipush	30000
   9:	if_icmpge	37
   12:	new	#3; //class java/lang/StringBuilder
   15:	dup
   16:	invokespecial	#4; //Method java/lang/StringBuilder."<init>":()V
   19:	aload_1
   20:	invokevirtual	#5; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
   23:	iload_2
   24:	invokevirtual	#6; //Method java/lang/StringBuilder.append:(I)Ljava/lang/StringBuilder;
   27:	invokevirtual	#7; //Method java/lang/StringBuilder.toString:()Ljava/lang/String;
   30:	astore_1
   31:	iinc	2, 1
   34:	goto	5
   37:	getstatic	#8; //Field java/lang/System.out:Ljava/io/PrintStream;
   40:	aload_1
   41:	invokevirtual	#9; //Method java/lang/String.length:()I
   44:	invokevirtual	#10; //Method java/io/PrintStream.println:(I)V