本文主要是介绍jad反编译工具的使用，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
Jad调用参数如下：
Usage: jad [option(s)] <filename(s)> Options: -a - generate JVM instructions as comments (annotate)-af - output fully qualified names when annotating-b - generate redundant braces (braces)-clear - clear all prefixes, including the default ones-d <dir> - directory for output files-dead - try to decompile dead parts of code (if there are any)-dis - disassembler only (disassembler)-f - generate fully qualified names (fullnames)-ff - output fields before methods (fieldsfirst)-i - print default initializers for fields (definits)-l<num> - split strings into pieces of max <num> chars (splitstr)-lnc - output original line numbers as comments (lnc)-lradix<num>- display long integers using the specified radix-nl - split strings on newline characters (splitstr)-noconv - don't convert Java identifiers into valid ones (noconv)-nocast - don't generate auxiliary casts-noclass - don't convert .class operators-nocode - don't generate the source code for methods-noctor - suppress the empty constructors-nodos - turn off check for class files written in DOS mode-nofd - don't disambiguate fields with the same names (nofldis)-noinner - turn off the support of inner classes-nolvt - ignore Local Variable Table entries (nolvt)-nonlb - don't insert a newline before opening brace (nonlb)-o - overwrite output files without confirmation-p - send all output to STDOUT (for piping)-pa <pfx>- prefix for all packages in generated source files-pc <pfx>- prefix for classes with numerical names (default: _cls)-pe <pfx>- prefix for unused exception names (default: _ex)-pf <pfx>- prefix for fields with numerical names (default: _fld)-pi<num> - pack imports into one line using .* (packimports)-pl <pfx>- prefix for locals with numerical names (default: _lcl)-pm <pfx>- prefix for methods with numerical names (default: _mth)-pp <pfx>- prefix for method parms with numerical names (default:_prm)-pv<num> - pack fields with the same types into one line (packfields)-r - restore package directory structure-radix<num>- display integers using the specified radix (8, 10, or 16)-s <ext> - output file extension (default: .jad)-safe - generate additional casts to disambiguate methods/fields-space - output space between keyword (if, while, etc) and expression-stat - show the total number of processed classes/methods/fields-t<num> - use <num> spaces for indentation (default: 4)-t - use tabs instead of spaces for indentation-v - show method names while decompiling-8 - convert Unicode strings into ANSI strings (ansi)-& - redirect STDERR to STDOUT
部分参数解释如下：
-8: 把Unicode编码的字符转换成ASCII输出，这样程序中的中文就会原样输出，而不是令人费解的uxxxx这种形式
-nl: 把字符串按照
切分输出，这样很长的字符串也不至于都放在一行，增强了可读性。
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-ff: 把数据成员放在方法之前，这样就符合大家写程序的习惯了
-space: 在if, while等关键字和表达式之间加入空格，这是java的良好编程风格
-nonlb: 不在开大括号（也就是左大括号）前加回车，这是大部分java程序员的习惯风格，大家可以根据自己的习惯选用
经过这样的配置，jad输出的java代码几乎跟手写的没有什么两样
具体我的示例如下：
在DOS下进入jad目录后，敲入：
D:\My Document\download\jad>jad -d D:\java -ff -nl -space -8 -nonlb -r -s java E:\vbao\WEB-INF\classes\com\sztelecom\vbao\**\*.class
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