jar包的反编译工具????????
如果java类被打成jar包,有什么工具可以将其还原为java文件吗?

请高手指点!!谢谢!

------解决方案--------------------
Jad v1.5.8f. Copyright 2001 Pavel Kouznetsov (kpdus@softhome.net).

Jad home page: http://www.kpdus.com/jad.html

反编译出所有的命令如下：

jad -o -r -sjava **/*.class

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