ClassFile Structure

69

class_index

12

00

01  00  0a  53  6f  75

name_index

#5

31  2e  6a  61  76  61

1

01

63  6c  61  73  73  66  69  6c  65  73  74  72  75  63  74  75

#6

#7

#3

09

#4 CONSTANT_Utf8_Info

#11

CA

10

bytes[4]

6C

index

bytes[6]

tag

64

#15

61

#6 CONSTANT_Utf8_Info

47

6E

0D

65

62

05

#13

line_number_table[0]

2F

this

74

CodeLineNumberTable

72

04

03

attribute_name_index

02

local_variable_table_length

LocalVariableTable_attribute

LocalVariableTable

bytes[15]

#9 CONSTANT_Utf8_Info

attribute_length

info[2]

0

methods[0]

#10

15

0x0001

56

72  65  2f  44  65  6d  6f  30  30  31

07

0C

#13 CONSTANT_NameAndType_Info

65  2f  44  65  6d  6f  30  30  31  3b

34

0x0021

#1 CONSTANT_Methodref_Info

attributes_count

2

21

max_locals

load_0

4C

magic

01  00  2c  63  6e

B1

start_pc

08

06

6

01  00  10  6a  61  76

length

invokespecial

6F

package cn.qiaqiatech.jvm.classfilestructure;public class Demo001 {}

73

75

max_stack

attrubes_count

0B

#2 CONSTANT_Class_Info

descriptior_index

ca fe ba be 00 00 00 34 00 10 0a 00 03 00 0d 0700 0e 07 00 0f 01 00 06 3c 69 6e 69 74 3e 01 0003 28 29 56 01 00 04 43 6f 64 65 01 00 0f 4c 696e 65 4e 75 6d 62 65 72 54 61 62 6c 65 01 00 124c 6f 63 61 6c 56 61 72 69 61 62 6c 65 54 61 626c 65 01 00 04 74 68 69 73 01 00 2e 4c 63 6e 2f71 69 61 71 69 61 74 65 63 68 2f 6a 76 6d 2f 636c 61 73 73 66 69 6c 65 73 74 72 75 63 74 75 7265 2f 44 65 6d 6f 30 30 31 3b 01 00 0a 53 6f 7572 63 65 46 69 6c 65 01 00 0c 44 65 6d 6f 30 3031 2e 6a 61 76 61 0c 00 04 00 05 01 00 2c 63 6e2f 71 69 61 71 69 61 74 65 63 68 2f 6a 76 6d 2f63 6c 61 73 73 66 69 6c 65 73 74 72 75 63 74 7572 65 2f 44 65 6d 6f 30 30 31 01 00 10 6a 61 7661 2f 6c 61 6e 67 2f 4f 62 6a 65 63 74 00 21 0002 00 03 00 00 00 00 00 01 00 01 00 04 00 05 0001 00 06 00 00 00 2f 00 01 00 01 00 00 00 05 2ab7 00 01 b1 00 00 00 02 00 07 00 00 00 06 00 0100 00 00 03 00 08 00 00 00 0c 00 01 00 00 00 0500 09 00 0a 00 00 00 01 00 0b 00 00 00 02 00 0c

0F

#4

BA

01  00  2e  4c  63  6e  2f  71  69  61  71  69  61  74  65  63  68  2f  6a  76  6d  2f  63

exception_table_length

29

package cn.qiaqiatech.jvm.classfilestructure;public class Demo001 { public Demo001() { }}

61  2f  6c  61  6e  67  2f  4f  62  6a  65  63  74  

01  00  2e  4c  63  6e  2f

18

major_version

4

63

3

FE

interfaces_count

()V

line_number_table_length

43

#7 CONSTANT_Utf8_Info

5

line_number

java格式代码

Code_attribute

71  69  61  71  69  61  74  65  63  68  2f  6a  76  6d  2f  63

#8 CONSTANT_Utf8_Info

#12

access_flags

attributes

bytes[18]

minor_version

4E

7

72  63  65  46  69  6c  65

2A

6c  61  73  73  66  69  6c  65  73  74  72  75  63  74  75  72

Code

descrpitor_index

#5 CONSTANT_Utf8_Info

code[5]

descriptor_index

LineNumberTable_attribute

code_length

fields_count

super_class

constant_pool_count

bytes[3]

class格式代码

this_class

SoruceFile_attribute

#14

#9

3E

0A

methods_count

#3 CONSTANT_Class_Info

3C

#2

BE

#8

return

54

B7

28

0E

init

68

01  00  0c  44  65  6d  6f  30  30

6D

2f  71  69  61  71  69  61  74  65  63  68  2f  6a  76  6d  2f

name_and_type_index