use javap & asm & cfr decompile .class file and show
use javap need external tools support, like this picture config
-help --help -? 输出此用法消息
-version 版本信息
-v -verbose 输出附加信息
-l 输出行号和本地变量表
-public 仅显示公共类和成员
-protected 显示受保护的/公共类和成员
-package 显示程序包/受保护的/公共类
和成员 (默认)
-p -private 显示所有类和成员
-c 对代码进行反汇编
-s 输出内部类型签名
-sysinfo 显示正在处理的类的
系统信息 (路径, 大小, 日期, MD5 散列)
-constants 显示最终常量
-classpath <path> 指定查找用户类文件的位置
-cp <path> 指定查找用户类文件的位置
-bootclasspath <path> 覆盖引导类文件的位置
refer to http://www.benf.org/other/cfr/
CFR 0.149
--aexagg (boolean)
--aggressivesizethreshold (int >= 0) default: 15000
--allowcorrecting (boolean) default: true
--analyseas (One of [DETECT, JAR, WAR, CLASS])
--arrayiter (boolean) default: true if class file from version 49.0 (Java 5) or greater
--caseinsensitivefs (boolean) default: true
--clobber (boolean)
--collectioniter (boolean) default: true if class file from version 49.0 (Java 5) or greater
--commentmonitors (boolean) default: false
--comments (boolean) default: true
--decodeenumswitch (boolean) default: true if class file from version 49.0 (Java 5) or greater
--decodefinally (boolean) default: true
--decodelambdas (boolean) default: true if class file from version 52.0 (Java 8) or greater
--decodestringswitch (boolean) default: true if class file from version 51.0 (Java 7) or greater
--dumpclasspath (boolean) default: false
--eclipse (boolean) default: true
--elidescala (boolean) default: false
--extraclasspath (string)
--forcecondpropagate (boolean)
--forceexceptionprune (boolean)
--forcereturningifs (boolean)
--forcetopsort (boolean)
--forcetopsortaggress (boolean)
--forloopaggcapture (boolean)
--hidebridgemethods (boolean) default: true
--hidelangimports (boolean) default: true
--hidelongstrings (boolean) default: false
--hideutf (boolean) default: true
--ignoreexceptions (boolean) default: false
--ignoreexceptionsalways (boolean) default: false
--importfilter (string)
--innerclasses (boolean) default: true
--instanceofpattern (boolean) default: true if class file from version 58.0 (Java 14) or greater, or experimental in 58.0 (Java 14)
--j14classobj (boolean) default: false if class file from version 49.0 (Java 5) or greater
--jarfilter (string)
--labelledblocks (boolean) default: true
--lenient (boolean) default: false
--liftconstructorinit (boolean) default: true
--methodname (string)
--obfuscationpath (string)
--outputdir (string)
--outputpath (string)
--override (boolean) default: true if class file from version 50.0 (Java 6) or greater
--previewfeatures (boolean) default: true
--pullcodecase (boolean) default: false
--recordtypes (boolean) default: true if class file from version 58.0 (Java 14) or greater, or experimental in 58.0 (Java 14)
--recover (boolean) default: true
--recovertypeclash (boolean)
--recovertypehints (boolean)
--relinkconststring (boolean) default: true
--removebadgenerics (boolean) default: true
--removeboilerplate (boolean) default: true
--removedeadmethods (boolean) default: true
--removeinnerclasssynthetics (boolean) default: true
--rename (boolean) default: false
--renamedupmembers (boolean) default: Value of option 'rename'
--renameenumidents (boolean) default: Value of option 'rename'
--renameillegalidents (boolean) default: Value of option 'rename'
--renamesmallmembers (int >= 0) default: 0
--showinferrable (boolean) default: false if class file from version 51.0 (Java 7) or greater
--showversion (boolean) default: true
--silent (boolean) default: false
--skipbatchinnerclasses (boolean) default: true
--stringbuffer (boolean) default: false if class file from version 49.0 (Java 5) or greater
--stringbuilder (boolean) default: true if class file from version 49.0 (Java 5) or greater
--stringconcat (boolean) default: true if class file from version 53.0 (Java 9) or greater
--sugarasserts (boolean) default: true
--sugarboxing (boolean) default: true
--sugarenums (boolean) default: true if class file from version 49.0 (Java 5) or greater
--switchexpression (boolean) default: true if class file from version 57.0 (Java 13) or greater, or experimental in 56.0 (Java 12)
--tidymonitors (boolean) default: true
--tryresources (boolean) default: true if class file from version 51.0 (Java 7) or greater
--usenametable (boolean) default: true
--help (string)