Interesting files and folders in OpenJDK9 (jigsaw)

InterestingFiles Interesting files and folders in OpenJDK9 (jigsaw)

$ tree -fL 2 build
build
└── build/linux-x86_64-normal-server-release
    ├── build/linux-x86_64-normal-server-release/bootcycle-spec.gmk
    ├── build/linux-x86_64-normal-server-release/build.log
    ├── build/linux-x86_64-normal-server-release/build.log.old
    ├── build/linux-x86_64-normal-server-release/buildtools
    ├── build/linux-x86_64-normal-server-release/compare.sh
    ├── build/linux-x86_64-normal-server-release/config.h
    ├── build/linux-x86_64-normal-server-release/config.log
    ├── build/linux-x86_64-normal-server-release/config.status
    ├── build/linux-x86_64-normal-server-release/hotspot
    ├── build/linux-x86_64-normal-server-release/hotspot-spec.gmk
    ├── build/linux-x86_64-normal-server-release/images
    ├── build/linux-x86_64-normal-server-release/jdk
    ├── build/linux-x86_64-normal-server-release/Makefile
    ├── build/linux-x86_64-normal-server-release/make-support
    ├── build/linux-x86_64-normal-server-release/nashorn
    ├── build/linux-x86_64-normal-server-release/source_tips
    ├── build/linux-x86_64-normal-server-release/spec.gmk
    ├── build/linux-x86_64-normal-server-release/spec.sh
    └── build/linux-x86_64-normal-server-release/support


$ tree -fL 2 images
images
├── images/demo
│   ├── images/demo/applets
│   ├── images/demo/jfc
│   ├── images/demo/jvmti
│   ├── images/demo/management
│   ├── images/demo/nbproject
│   ├── images/demo/README
│   └── images/demo/scripting
├── images/jdk
│   ├── images/jdk/ASSEMBLY_EXCEPTION
│   ├── images/jdk/bin
│   ├── images/jdk/conf
│   ├── images/jdk/demo
│   ├── images/jdk/include
│   ├── images/jdk/jrt-fs.jar
│   ├── images/jdk/lib
│   ├── images/jdk/LICENSE
│   ├── images/jdk/man
│   ├── images/jdk/release
│   ├── images/jdk/sample
│   ├── images/jdk/src.zip
│   └── images/jdk/THIRD_PARTY_README
├── images/_jdk-jimages-create.marker
├── images/jdk-sorted-modules
├── images/jre
│   ├── images/jre/ASSEMBLY_EXCEPTION
│   ├── images/jre/bin
│   ├── images/jre/conf
│   ├── images/jre/lib
│   ├── images/jre/LICENSE
│   ├── images/jre/man
│   ├── images/jre/release
│   └── images/jre/THIRD_PARTY_README
├── images/_jre-jimages-create.marker
├── images/jre-sorted-modules
├── images/sample
│   ├── images/sample/annotations
│   ├── images/sample/forkjoin
│   ├── images/sample/jmx
│   ├── images/sample/lambda
│   ├── images/sample/nbproject
│   ├── images/sample/nio
│   ├── images/sample/README
│   ├── images/sample/scripting
│   └── images/sample/try-with-resources
└── images/sec-bin.zip


$ cd ./sources/m2/build/linux-x86_64-normal-server-release/images/jdk/bin

$ ./jimage --help
Usage: jimage <extract|recreate|info|list|verify> <options> jimage...

  extract  - Extract all jimage entries into separate files into the directory
             specified by --dir=<directory> (default=.)
  recreate - Reconstructs a jimage from an extracted directory (--dir)
  info     - Prints information specified in the jimage header.
  list     - Prints the names of all the entries in the jimage.  When used with
             --verbose will also print entry attributes ex. size and offset.
  verify   - Reports errors on any .class entries that dont verify as classes.

Possible options include:
  --dir                                Target directory for create/expand
  --help                               Print this usage message
  --verbose                            Verbose listing
  --version                            Version information


$ cd ./sources/m2/jdk
$ tree -fL 2 src
src
├── src/bsd
│   └── src/bsd/doc
├── src/demo
│   ├── src/demo/share
│   └── src/demo/solaris
├── src/java.base
│   ├── src/java.base/aix
│   ├── src/java.base/linux
│   ├── src/java.base/macosx
│   ├── src/java.base/share
│   ├── src/java.base/solaris
│   ├── src/java.base/unix
│   └── src/java.base/windows
├── src/java.corba
│   └── src/java.corba/share
├── src/java.desktop
│   ├── src/java.desktop/aix
│   ├── src/java.desktop/linux
│   ├── src/java.desktop/macosx
│   ├── src/java.desktop/share
│   ├── src/java.desktop/unix
│   └── src/java.desktop/windows
├── src/java.instrument
│   ├── src/java.instrument/share
│   ├── src/java.instrument/unix
│   └── src/java.instrument/windows
├── src/java.logging
│   └── src/java.logging/share
├── src/java.management
│   ├── src/java.management/share
│   ├── src/java.management/unix
│   └── src/java.management/windows
├── src/java.naming
│   └── src/java.naming/share
├── src/java.prefs
│   ├── src/java.prefs/macosx
│   ├── src/java.prefs/share
│   ├── src/java.prefs/unix
│   └── src/java.prefs/windows
├── src/java.rmi
│   ├── src/java.rmi/share
│   └── src/java.rmi/unix
├── src/java.scripting
│   └── src/java.scripting/share
├── src/java.security.acl
│   └── src/java.security.acl/share
├── src/java.security.jgss
│   ├── src/java.security.jgss/macosx
│   ├── src/java.security.jgss/share
│   ├── src/java.security.jgss/unix
│   └── src/java.security.jgss/windows
├── src/java.security.sasl
│   └── src/java.security.sasl/share
├── src/java.smartcardio
│   ├── src/java.smartcardio/share
│   ├── src/java.smartcardio/unix
│   └── src/java.smartcardio/windows
├── src/java.sql
│   └── src/java.sql/share
├── src/java.sql.rowset
│   └── src/java.sql.rowset/share
├── src/java.xml.crypto
│   └── src/java.xml.crypto/share
├── src/jdk.attach
│   ├── src/jdk.attach/aix
│   ├── src/jdk.attach/linux
│   ├── src/jdk.attach/macosx
│   ├── src/jdk.attach/share
│   ├── src/jdk.attach/solaris
│   └── src/jdk.attach/windows
├── src/jdk.charsets
│   ├── src/jdk.charsets/share
│   └── src/jdk.charsets/unix
├── src/jdk.compiler
│   └── src/jdk.compiler/share
├── src/jdk.crypto.ec
│   └── src/jdk.crypto.ec/share
├── src/jdk.crypto.mscapi
│   └── src/jdk.crypto.mscapi/windows
├── src/jdk.crypto.pkcs11
│   ├── src/jdk.crypto.pkcs11/share
│   ├── src/jdk.crypto.pkcs11/solaris
│   ├── src/jdk.crypto.pkcs11/unix
│   └── src/jdk.crypto.pkcs11/windows
├── src/jdk.crypto.ucrypto
│   └── src/jdk.crypto.ucrypto/solaris
├── src/jdk.deploy.osx
│   └── src/jdk.deploy.osx/macosx
├── src/jdk.dev
│   └── src/jdk.dev/share
├── src/jdk.hprof.agent
│   ├── src/jdk.hprof.agent/aix
│   ├── src/jdk.hprof.agent/share
│   ├── src/jdk.hprof.agent/unix
│   └── src/jdk.hprof.agent/windows
├── src/jdk.httpserver
│   └── src/jdk.httpserver/share
├── src/jdk.jcmd
│   └── src/jdk.jcmd/share
├── src/jdk.jconsole
│   └── src/jdk.jconsole/share
├── src/jdk.jdi
│   ├── src/jdk.jdi/share
│   └── src/jdk.jdi/windows
├── src/jdk.jdwp.agent
│   ├── src/jdk.jdwp.agent/share
│   ├── src/jdk.jdwp.agent/unix
│   └── src/jdk.jdwp.agent/windows
├── src/jdk.jvmstat
│   └── src/jdk.jvmstat/share
├── src/jdk.localedata
│   └── src/jdk.localedata/share
├── src/jdk.naming.dns
│   └── src/jdk.naming.dns/share
├── src/jdk.naming.rmi
│   └── src/jdk.naming.rmi/share
├── src/jdk.rmic
│   └── src/jdk.rmic/share
├── src/jdk.runtime
│   ├── src/jdk.runtime/share
│   ├── src/jdk.runtime/unix
│   └── src/jdk.runtime/windows
├── src/jdk.sctp
│   ├── src/jdk.sctp/aix
│   ├── src/jdk.sctp/macosx
│   ├── src/jdk.sctp/share
│   ├── src/jdk.sctp/unix
│   └── src/jdk.sctp/windows
├── src/jdk.security.auth
│   ├── src/jdk.security.auth/share
│   ├── src/jdk.security.auth/unix
│   └── src/jdk.security.auth/windows
├── src/jdk.security.jgss
│   └── src/jdk.security.jgss/share
├── src/jdk.zipfs
│   └── src/jdk.zipfs/share
├── src/linux
│   └── src/linux/doc
├── src/sample
│   ├── src/sample/share
│   └── src/sample/solaris
└── src/solaris
    └── src/solaris/doc


$ cd sources/m2/jdk/src
$ ls
bsd              java.management     java.security.sasl  jdk.compiler        jdk.hprof.agent  jdk.localedata     jdk.security.jgss
demo             java.naming         java.smartcardio    jdk.crypto.ec       jdk.httpserver   jdk.naming.dns     jdk.zipfs
java.base        java.prefs          java.sql            jdk.crypto.mscapi   jdk.jcmd         jdk.naming.rmi     linux
java.corba       java.rmi            java.sql.rowset     jdk.crypto.pkcs11   jdk.jconsole     jdk.rmic           sample
java.desktop     java.scripting      java.xml.crypto     jdk.crypto.ucrypto  jdk.jdi          jdk.runtime        solaris
java.instrument  java.security.acl   jdk.attach          jdk.deploy.osx      jdk.jdwp.agent   jdk.sctp
java.logging     java.security.jgss  jdk.charsets        jdk.dev             jdk.jvmstat      jdk.security.auth

$ tree -fldL 5 java.base  | less

$ tree -dflL 5 java.base/share/classes/java  

$ tree -dflL 5 java.base/share/classes/java  

.
.
.
├── java.base/share/classes/java
│   ├── java.base/share/classes/java/io
│   ├── java.base/share/classes/java/lang
│   │   ├── java.base/share/classes/java/lang/annotation
│   │   ├── java.base/share/classes/java/lang/doc-files
│   │   ├── java.base/share/classes/java/lang/invoke
│   │   ├── java.base/share/classes/java/lang/ref
│   │   └── java.base/share/classes/java/lang/reflect
│   ├── java.base/share/classes/java/math
│   ├── java.base/share/classes/java/net
│   │   └── java.base/share/classes/java/net/doc-files
│   ├── java.base/share/classes/java/nio
│   │   ├── java.base/share/classes/java/nio/channels
│   │   │   └── java.base/share/classes/java/nio/channels/spi
│   │   ├── java.base/share/classes/java/nio/charset
│   │   │   └── java.base/share/classes/java/nio/charset/spi
│   │   └── java.base/share/classes/java/nio/file
│   │       ├── java.base/share/classes/java/nio/file/attribute
│   │       └── java.base/share/classes/java/nio/file/spi
│   ├── java.base/share/classes/java/security
│   │   ├── java.base/share/classes/java/security/cert
│   │   ├── java.base/share/classes/java/security/interfaces
│   │   └── java.base/share/classes/java/security/spec
│   ├── java.base/share/classes/java/text
│   │   └── java.base/share/classes/java/text/spi
│   ├── java.base/share/classes/java/time
│   │   ├── java.base/share/classes/java/time/chrono
│   │   ├── java.base/share/classes/java/time/format
│   │   ├── java.base/share/classes/java/time/temporal
│   │   └── java.base/share/classes/java/time/zone
│   └── java.base/share/classes/java/util
│       ├── java.base/share/classes/java/util/concurrent
│       │   ├── java.base/share/classes/java/util/concurrent/atomic
│       │   └── java.base/share/classes/java/util/concurrent/locks
│       ├── java.base/share/classes/java/util/function
│       ├── java.base/share/classes/java/util/jar
│       ├── java.base/share/classes/java/util/regex
│       ├── java.base/share/classes/java/util/spi
│       ├── java.base/share/classes/java/util/stream
│       └── java.base/share/classes/java/util/zip
.
.
.


$  tree -flL 5 java.base/share/classes/java/io
$  tree -dflL 5 java.base/share/classes/java/io
│   ├── java.base/share/classes/java/io

$  tree -flL 5 java.base/share/classes/java/lang
(interesting)
$  tree -dflL 5 java.base/share/classes/java/lang
│   ├── java.base/share/classes/java/lang
.
.
.
$  tree -flL 5 java.base/share/classes/java/nio
(interesting)
$  tree -dflL 5 java.base/share/classes/java/nio
│   ├── java.base/share/classes/java/nio

$  tree -flL 5 java.base/share/classes/java/text
$  tree -dflL 5 java.base/share/classes/java/text
│   ├── java.base/share/classes/java/text
.
$  tree -flL 5 java.base/share/classes/java/time
(interesting)
$  tree -dflL 5 java.base/share/classes/java/time
│   ├── java.base/share/classes/java/time
.
.
.
$ tree -flL 5 java.base/share/classes/java/util
(interesting)
$ tree -dflL 5 java.base/share/classes/java/util
│   └── java.base/share/classes/java/util


OpenJDK8 (sources/jdk8_tl/jdk/src)
$ tree -dflL 5 src/share/classes/java/util

share/classes/java/util
├── share/classes/java/util/concurrent
│   ├── share/classes/java/util/concurrent/atomic
│   └── share/classes/java/util/concurrent/locks
├── share/classes/java/util/function
├── share/classes/java/util/jar
├── share/classes/java/util/logging
├── share/classes/java/util/prefs
├── share/classes/java/util/regex
├── share/classes/java/util/spi
├── share/classes/java/util/stream
└── share/classes/java/util/zip

OpenJDK 9 (sources/m2/jdk/src)
$ tree -dflL 5 java.base/share/classes/java/util

java.base/share/classes/java/util
├── java.base/share/classes/java/util/concurrent
│   ├── java.base/share/classes/java/util/concurrent/atomic
│   └── java.base/share/classes/java/util/concurrent/locks
├── java.base/share/classes/java/util/function
├── java.base/share/classes/java/util/jar
├── java.base/share/classes/java/util/regex
├── java.base/share/classes/java/util/spi
├── java.base/share/classes/java/util/stream
└── java.base/share/classes/java/util/zip

OpenJDK 9 - m2 (sources/m2/jdk/src)
$ tree -fl | grep "/Socket." 

OpenJDK 9 - m2 (sources/m2/jdk/src)
$ ls java.sql/share/classes/java/sql


OpenJDK 8
$ ls share/classes/java/sql