18 .end method

    19 

    20 .method public static writes(Ljava/lang/String;)V

    21     .limit stack 2

    22     .limit locals 1

    23     getstatic java/lang/System/out Ljava/io/PrintStream;

    24     aload 0

    25     invokevirtual java/io/PrintStream/println(Ljava/lang/String;)V

    26     return

    27 .end method

    28 

    29 .method public static read()I 

    30     .limit locals 10 

    31     .limit stack 10

    32 

    33     ldc 0 

    34     istore 1  ; this will hold our final integer 

    35 

    36 Label1: 

    37     getstatic java/lang/System/in Ljava/io/InputStream; 

    38     invokevirtual java/io/InputStream/read()I 

    39     istore 2 

    40     iload 2 

    41     ldc 10  ; the newline delimiter 

    42     isub 

    43     ifeq Label2 

    44     iload 2 

    45     ldc 32   ; the space delimiter 

    46     isub 

    47     ifeq Label2

    48 

    49     iload 2 

    50     ldc 48   ; we have our digit in ASCII, have to subtract it from 48 

    51     isub 

    52     ldc 10 

    53     iload 1 

    54     imul 

    55     iadd 

    56     istore 1 

    57     goto Label2

    58     goto Label1 

    59 

    60 Label2: 

    61     iload 1 ; when we come here we have our integer computed in local variable 1 

    62     ireturn