逆コンパイラJAD(the fast JAva Decompiler)

• 逆コンパイル
• 一括逆コンパイル
• パッケージ階層の再現
• 行番号の同時出力
• 細かい制御（デフォルトコンストラクタの出力有無やインデントのスペース数設定など）

>jad クラス名

>jad Sample

>jad classes\*.class

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)
s-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 expressio
-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