$ java-check-environment
 * === Java Environment Checker ===
 * The purpose of this script is to check the sanity of your Java Environment.
 * We have significantly changed and improved the way Java is handled in many respects.
 * Please refer to http://www.gentoo.org/proj/en/java/java-upgrade.xml for details

 * Checking vm_environment_files ...                                                     [ ok ]
 * Checking user_settings ...                                                            [ ok ]
 * Checking generation_1_system_vm ...                                                   [ ok ]
 * Java environment is sane. Congratulations!
radfoj@radfoj radfoj $ java-config -L
1) Sun JDK 1.4.2.12 [sun-jdk-1.4] (/usr/share/java-config-2/vm/sun-jdk-1.4)
*) Sun JDK 1.5.0.07 [sun-jdk-1.5] (/usr/share/java-config-2/vm/sun-jdk-1.5)
radfoj@radfoj radfoj $ java-config-1 -L
[sun-jdk-1.4.2.12] "Sun JDK 1.4.2.12" (/etc/env.d/java/20sun-jdk-1.4.2.12) *
radfoj@radfoj radfoj $ java-config-2 -L
1) Sun JDK 1.4.2.12 [sun-jdk-1.4] (/usr/share/java-config-2/vm/sun-jdk-1.4)
*) Sun JDK 1.5.0.07 [sun-jdk-1.5] (/usr/share/java-config-2/vm/sun-jdk-1.5)