如何反编译Java
我想要一个简单的方法来反编译Java。我想检查javac编译器对我的代码进行的转换和修改。哪些是好的产品，哪些是好的/坏的。最好的可能是jad： 如果您使用Eclipse，您可以使用JadClipse插件，以获得更符合人体工程学的界面：如何反编译Java,java,decompiling,Java,Decompiling,我想要一个简单的方法来反编译Java。我想检查javac编译器对我的代码进行的转换和修改。哪些是好的产品，哪些是好的/坏的。最好的可能是jad： 如果您使用Eclipse，您可以使用JadClipse插件，以获得更符合人体工程学的界面： 我发现非常好。快速而肮脏，使用JDK附带的javap javap -c test Compiled from "test.java" public class test extends java.lang.Object{ public test(); Co
我发现非常好。快速而肮脏，使用JDK附带的
javapjavap -c test
Compiled from "test.java"
public class test extends java.lang.Object{
public test();
Code:
0: aload_0
1: invokespecial #1; //Method java/lang/Object."<init>":()V
4: return
public static void main(java.lang.String[]) throws java.lang.Exception;
Code:
0: ldc #2; //String CR_ABC_DEF_GHI
2: astore_1
3: ldc #3; //String TYPE=Eligibility Only|CLIENT_ID=62|EMPLOYER_ID=0|LOCATION_ID=0|PLAN_ID=all|FREQUENCY=52|FILE=null|FILETYPE=C|PROCESSTOLAUNCH=10|PROCESSTOLAUNCHSTATUS=100|SCHEDULE_ID=29837d692f4c43e786f1097fab7c360c
5: astore_2
6: ldc #4; //String \|
8: astore_3
9: ldc #5; //String FILE_NAME_TEMPLATE
11: astore 4
13: ldc #6; //String FILE
15: astore 5
17: new #7; //class java/lang/StringBuilder
20: dup
21: invokespecial #8; //Method java/lang/StringBuilder."<init>":()V
24: aload_3
25: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
28: aload 4
30: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
33: ldc #10; //String =
35: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
38: ldc #11; //String [^
40: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
43: aload_3
44: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
47: ldc #12; //String ]*
49: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
52: aload_3
53: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
56: invokevirtual #13; //Method java/lang/StringBuilder.toString:()Ljava/lang/String;
59: astore 6
61: new #7; //class java/lang/StringBuilder
64: dup
65: invokespecial #8; //Method java/lang/StringBuilder."<init>":()V
68: aload_3
69: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
72: aload 5
74: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
77: ldc #10; //String =
79: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
82: ldc #11; //String [^
84: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
87: aload_3
88: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
91: ldc #12; //String ]*
93: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
96: aload_3
97: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
100: invokevirtual #13; //Method java/lang/StringBuilder.toString:()Ljava/lang/String;
103: astore 7
105: new #7; //class java/lang/StringBuilder
108: dup
109: invokespecial #8; //Method java/lang/StringBuilder."<init>":()V
112: aload_3
113: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
116: aload 4
118: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
121: ldc #10; //String =
123: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
126: aload_1
127: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
130: aload_3
131: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
134: invokevirtual #13; //Method java/lang/StringBuilder.toString:()Ljava/lang/String;
137: astore 8
139: aload_2
140: aload 6
142: aload 8
144: invokevirtual #14; //Method java/lang/String.replaceAll:(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;
147: aload 7
149: aload 8
151: invokevirtual #14; //Method java/lang/String.replaceAll:(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;
154: astore 9
156: getstatic #15; //Field java/lang/System.out:Ljava/io/PrintStream;
159: new #7; //class java/lang/StringBuilder
162: dup
163: invokespecial #8; //Method java/lang/StringBuilder."<init>":()V
166: ldc #16; //String before =
168: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
171: aload_2
172: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
175: invokevirtual #13; //Method java/lang/StringBuilder.toString:()Ljava/lang/String;
178: invokevirtual #17; //Method java/io/PrintStream.println:(Ljava/lang/String;)V
181: getstatic #15; //Field java/lang/System.out:Ljava/io/PrintStream;
184: new #7; //class java/lang/StringBuilder
187: dup
188: invokespecial #8; //Method java/lang/StringBuilder."<init>":()V
191: ldc #18; //String pattern1 =
193: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
196: aload 6
198: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
201: invokevirtual #13; //Method java/lang/StringBuilder.toString:()Ljava/lang/String;
204: invokevirtual #17; //Method java/io/PrintStream.println:(Ljava/lang/String;)V
207: getstatic #15; //Field java/lang/System.out:Ljava/io/PrintStream;
210: new #7; //class java/lang/StringBuilder
213: dup
214: invokespecial #8; //Method java/lang/StringBuilder."<init>":()V
217: ldc #19; //String pattern2 =
219: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
222: aload 7
224: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
227: invokevirtual #13; //Method java/lang/StringBuilder.toString:()Ljava/lang/String;
230: invokevirtual #17; //Method java/io/PrintStream.println:(Ljava/lang/String;)V
233: getstatic #15; //Field java/lang/System.out:Ljava/io/PrintStream;
236: new #7; //class java/lang/StringBuilder
239: dup
240: invokespecial #8; //Method java/lang/StringBuilder."<init>":()V
243: ldc #20; //String replace =
245: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
248: aload 8
250: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
253: invokevirtual #13; //Method java/lang/StringBuilder.toString:()Ljava/lang/String;
256: invokevirtual #17; //Method java/io/PrintStream.println:(Ljava/lang/String;)V
259: getstatic #15; //Field java/lang/System.out:Ljava/io/PrintStream;
262: new #7; //class java/lang/StringBuilder
265: dup
266: invokespecial #8; //Method java/lang/StringBuilder."<init>":()V
269: ldc #21; //String after =
271: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
274: aload 9
276: invokevirtual #9; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
279: invokevirtual #13; //Method java/lang/StringBuilder.toString:()Ljava/lang/String;
282: invokevirtual #17; //Method java/io/PrintStream.println:(Ljava/lang/String;)V
285: return
}
javap-c测试
从“test.java”编译而来
公共类测试扩展了java.lang.Object{
公开考试（）；
代码：
0:aload_0
1:invokespecial#1；//方法java/lang/Object。“：（）V
4：返回
publicstaticvoidmain（java.lang.String[]）抛出java.lang.Exception；
代码：
0:ldc#2；//字符串CR#u ABC#u DEF#u GHI
2:astore_1
3:ldc#3；//字符串类型=仅适用于资格|客户| ID=62 |雇主| ID=0 |位置| ID=0 |计划| ID=all |频率=52 |文件类型=null |文件类型=C |进程启动=10 |进程启动状态=100 |计划| ID=29837D692F4C4E786F1097C360C
5:astore_2
6:ldc#4；//字符串\|
8:astore_3
9:ldc#5；//字符串文件名模板
11:astore 4
13:ldc#6；//字符串文件
15:astore 5
17:new#7；//类java/lang/StringBuilder
20:dup
21:invokespecial#8；//方法java/lang/StringBuilder。”“：（）V
24:aload_3
25:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang/StringBuilder；
28:aload 4
30:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang/StringBuilder；
33:ldc#10；//字符串=
35:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang/StringBuilder；
38:ldc#11；//字符串[^
40:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang/StringBuilder；
43:aload_3
44:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang/StringBuilder；
47:ldc#12；//字符串]*
49:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang/StringBuilder；
52:aload_3
53:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang/StringBuilder；
56:invokevirtual#13；//方法java/lang/StringBuilder.toString:（）Ljava/lang/String；
59:astore 6
61:new#7；//类java/lang/StringBuilder
64:dup
65:invokespecial#8；//方法java/lang/StringBuilder。“”：（）V
68:aload_3
69:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang/StringBuilder；
72:aload 5
74:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang/StringBuilder；
77:ldc#10；//字符串=
79:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang/StringBuilder；
82:ldc#11；//字符串[^
84:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang/StringBuilder；
87:aload_3
88:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang/StringBuilder；
91:ldc#12；//字符串]*
93:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang/StringBuilder；
96:aload_3
97:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang/StringBuilder；
100:invokevirtual#13；//方法java/lang/StringBuilder.toString:（）Ljava/lang/String；
103:astore 7
105:new#7；//类java/lang/StringBuilder
108:dup
109:invokespecial#8；//方法java/lang/StringBuilder。“”：（）V
112:aload_3
113:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang/StringBuilder；
116:aload 4
118:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang/StringBuilder；
121:ldc#10；//字符串=
123:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang/StringBuilder；
126:aload_1
127:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang/StringBuilder；
130:aload_3
131:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang/StringBuilder；
134:invokevirtual#13；//方法java/lang/StringBuilder.toString:（）Ljava/lang/String；
137:astore 8
139:aload_2
140:aload 6
142:aload 8
144:invokevirtual#14；//方法java/lang/String.replaceAll:（Ljava/lang/String；Ljava/lang/String；）Ljava/lang/String；
147:aload 7
149:aload 8
151:invokevirtual#14；//方法java/lang/String.replaceAll:（Ljava/lang/String；Ljava/lang/String；）Ljava/lang/String；
154:astore 9
156:getstatic#15；//字段java/lang/System.out:Ljava/io/PrintStream；
159:new#7；//类java/lang/StringBuilder
162:dup
163:invokespecial#8；//方法java/lang/StringBuilder。”“：（）V
166:ldc#16；//前面的字符串=
168:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang/StringBuilder；
171:aload_2
172:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang/StringBuilder；
175:invokevirtual#13；//方法java/lang/StringBuilder.toString:（）Ljava/lang/String；
178:invokevirtual#17；//方法java/io/PrintStream.println:（Ljava/lang/String；）V
181:getstatic#15；//字段java/lang/System.out:Ljava/io/PrintStream；
184:new#7；//类java/lang/StringBuilder
187:dup
188:invokespecial#8；//方法java/lang/StringBuilder。“”：（）V
191:ldc#18；//字符串模式1=
193:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang/StringBuilder；
196:aload 6
198:invokevirtual#9；//方法java/lang/StringBuilder.append:（Ljava/lang/String；）Ljava/lang