1 IDEA jclasslib
2 .class 文件分析
1魔数 |
ca fe ba be |
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Class文件版本minor_version |
20 20 |
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major_version |
20 34 |
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2常量池 |
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constant_pool_count |
00 1d |
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CONSTANT_MethodHandle_info |
0a 00 06 00 0f |
1 |
CONSTANT_Fieldref_info |
09 00 10 00 11 |
2 |
CONSTANT_String_info |
08 00 12 |
3 |
CONSTANT_MethodHandle_info |
0a 00 13 00 14 |
4 |
CONSTANT_Class_info |
07 00 15 |
5 |
CONSTANT_Class_info |
07 00 16 |
6 |
CONSTANT_Utf8_info |
01 00 06 3c 69 6e 69 74 3e |
7 <init> |
CONSTANT_Utf8_info |
01 00 03 28 29 56 |
8 ()V |
CONSTANT_Utf8_info |
01 00 04 43 6f 64 65 |
9 Code |
CONSTANT_Utf8_info |
01 00 0f 4c 69 6e 65 4e 75 6d 62 65 72 54 61 62 6c 65 |
10 Line NumberTable |
CONSTANT_Utf8_info |
01 00 04 6d 61 69 6e |
11 main |
CONSTANT_Utf8_info |
01 00 16 28 5b 4c 6a 61 76 61 2f 6c 61 6e 67 2f 53 74 72 69 6e 67 3b 29 56 |
([Ljava/lang /String;])V |
CONSTANT_Utf8_info |
01 00 0a 53 6f 75 72 63 65 46 69 6c 65 |
SourceFile |
CONSTANT_Utf8_info |
01 00 09 44 65 6d 6f 2e 6a 61 76 61 |
Demo.java |
CONSTANT_NameAndType_info |
0c 00 07 00 08 |
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CONSTANT_Class_info |
07 00 17 |
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CONSTANT_NameAndType_info |
0c 00 18 00 19 |
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CONSTANT_Utf8_info |
01 00 0b 68 65 6c 6c 6f 20 77 6f 72 6c 64 |
hello world |
CONSTANT_Class_info |
07 00 1a |
|
CONSTANT_NameAndType_info |
0c 00 1b 00 1c |
|
CONSTANT_Utf8_info |
01 00 04 44 65 6d 6f |
Demo |
CONSTANT_Utf8_info |
01 00 10 6a 61 76 61 2f 6c 61 6e 67 2f 4f 62 6a 65 63 74 |
java/lang/ Object |
CONSTANT_Utf8_info |
01 00 10 6a 61 76 61 2f 6c 61 6e 67 2f 53 79 73 74 65 6d |
java/lang/ System |
CONSTANT_Utf8_info |
01 00 03 6f 75 74 |
out |
CONSTANT_Utf8_info |
01 00 15 4c 6a 61 76 61 2f 69 6f 2f 50 72 69 6e 74 53 74 72 65 61 6d 3b |
Ljava/io /PrintStrem; |
CONSTANT_Utf8_info |
01 00 13 6a 61 76 61 2f 69 6f 2f 50 72 69 6e 74 53 74 72 65 61 6d |
java/io/ PrintStream |
CONSTANT_Utf8_info |
01 00 07 70 72 69 6e 74 6c 6e |
println |
CONSTANT_Utf8_info |
01 00 15 28 4c 6a 61 76 61 2f 6c 61 6e 67 2f 53 74 72 69 6e 67 3b 29 56 |
(Ljava/lang/ String;)V |
3 访问标志 access_flags |
00 21 |
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4 类索引 this_class |
00 05 |
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父类索引 super_class |
00 06 |
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接口索引 interfaces_count |
00 00 |
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5 字段表集合fields_count |
00 00 |
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6 方法表集合 methods_count |
00 02 |
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field_info {access_flags name_index descriptor_index attributes_count attributes{attribute_name_index attribute_length info{max stack max_locals code_length code * 5 exception_table_length attributes_count attributes{attribute_name_index attribute_length info * 6 } } |
00 01 00 07 00 08 00 01 00 09 00 00 00 1d 00 01 00 01 00 00 00 05 2a b7 00 01 b1 00 00 00 01 00 0a 00 00 00 06 00 01 00 00 00 04 |
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field_info { access_flags name_index descriptor_index attributes_count attributes{attribute_name_index attribute_length info{ max stack max_locals code_length code * 9 exception_table_length attributes_count attributes{attribute_name_index attribute_length info*10} 最后十个,sorry } |
00 09 00 0b 00 0c 00 01 00 09 00 00 00 25 00 02 00 01 00 00 00 09 b2 00 02 12 03 b6 00 04 b1 00 00 00 01 00 0a 00 00 00 0a 00 02 00 00 00 06 00 08 00 07 00 01 00 0d 00 00 00 02 00 0e |
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