publicstaticvoidmain(java.lang.String[]); descriptor:([Ljava/lang/String;)V flags: ACC_PUBLIC, ACC_STATIC Code: stack=4, locals=2, args_size=10: iconst_21: istore_12: iload_13: iload_14: iload_15: iload_16: imul7: isub8: dup9: istore_110: iadd11: istore_112: getstatic #2// Field java/lang/System.out:Ljava/io/PrintStream;15:new #3// class java/lang/StringBuilder18: dup19: invokespecial #4// Method java/lang/StringBuilder."":()V22: ldc #5// String a=24: invokevirtual #6// Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;27: iload_128: invokevirtual #7// Method java/lang/StringBuilder.append:(I)Ljava/lang/StringBuilder;31: invokevirtual #8// Method java/lang/StringBuilder.toString:()Ljava/lang/String;34: invokevirtual #9// Method java/io/PrintStream.println:(Ljava/lang/String;)V37:return LineNumberTable: line5:0 line6:2 line7:12 line8:37