eselect java-vm list
Available Java Virtual Machines:
  [1]   oracle-jdk-bin-1.8  system-vm user-vm



ls -la /usr/share/java-config-2/
total 28
drwxr-xr-x   5 root root  4096  3 gen 03:15 .
drwxr-xr-x 230 root root 12288 25 gen 02:57 ..
drwxr-xr-x   2 root root  4096 26 jul  2015 config
drwxr-xr-x   2 root root  4096 26 jul  2015 launcher
drwxr-xr-x   2 root root  4096 23 gen 02:54 vm



equery u oracle-jdk-bin 
[ Legend : U - final flag setting for installation]
[        : I - package is installed with flag     ]
[ Colors : set, unset                             ]
 * Found these USE flags for dev-java/oracle-jdk-bin-1.8.0.72-r1:
 U I
 - - alsa         : Add support for media-libs/alsa-lib (Advanced Linux Sound Architecture)
 + + cups         : Add support for CUPS (Common Unix Printing System)
 - - derby        : Install bundled Derby (Java database)
 - - doc          : Add extra documentation (API, Javadoc, etc). It is recommended to enable per
                    package instead of globally
 - - examples     : Install examples, usually source code
 + + fontconfig   : Support for configuring and customizing font access via media-libs/fontconfig
 - - headless-awt : Don't install the X backend for AWT, needed by some GUIs (used to be X flag)
 - - javafx       : Install JavaFX libraries
 + + jce          : Install Java Cryptographic Extension Unlimited Strength Jurisdiction Policy Files
 + + nsplugin     : Build plugin for browsers supporting the Netscape plugin architecture (that is
                    almost any modern browser)
 - - pax_kernel   : Use paxctl to mark the JVM binaries
 - - source       : Install JVM (and optionally JavaFX) sources



eix -I java
[I] app-eselect/eselect-java
     Available versions:  0.1.0 (~)0.1.0-r1 (~)0.2.0 **9999[1]
     Installed versions:  0.2.0(03:01:33 03/01/16)
     Homepage:            http://www.gentoo.org/proj/en/java/
     Description:         A set of eselect modules for Java

[U] dev-java/java-config
     Available versions:  (2) 2.1.11^t[4] 2.1.12-r1^t[4] 2.2.0 (~)2.2.0[4] 2.2.0-r1000[3] **2.2.9999[1] **2.9999[1]
       {python_abis_2.6 python_abis_2.7 python_abis_3.1 python_abis_3.2 python_abis_3.3 python_abis_3.4 python_abis_3.5 python_abis_3.6 PYTHON_TARGETS="pypy python2_7 python3_3 python3_4"}
     Installed versions:  2.2.0(2)(04:34:38 26/07/15)(PYTHON_TARGETS="python2_7 python3_4 -python3_3")
     Homepage:            http://www.gentoo.org/proj/en/java/
     Description:         Java environment configuration tool

[I] dev-java/java-config-wrapper
     Available versions:  0.16 0.16[2] (~)0.16-r1
     Installed versions:  0.16-r1(03:11:22 08/12/15)
     Homepage:            https://www.gentoo.org/proj/en/java
     Description:         Wrapper for java-config

[I] dev-java/javatoolkit
     Available versions:  0.3.0-r9 0.3.0-r9[3] {python_abis_2.6 python_abis_2.7 python_abis_2.7-jython python_abis_2.7-pypy PYTHON_TARGETS="python2_7"}
     Installed versions:  0.3.0-r9(13:33:08 25/05/15)(PYTHON_TARGETS="python2_7")
     Homepage:            http://www.gentoo.org/proj/en/java/
     Description:         Collection of Gentoo-specific tools for Java

[I] sys-apps/baselayout-java
     Available versions:  0.1.0 **9999[1]
     Installed versions:  0.1.0(13:32:52 25/05/15)
     Homepage:            http://www.gentoo.org/proj/en/java/
     Description:         Baselayout for Java

[1] "java" layman/java
[2] "poly-c" layman/poly-c
[3] "progress" layman/progress
[4] "pypy_alice" layman/pypy_alice