$ java -version java version "1.6.0_0" IcedTea6 1.4 (6b14-0ubuntu10) Runtime Environment (build 1.6.0_0-b14) OpenJDK 64-Bit Server VM (build 14.0-b08, mixed mode)
$ java -version
java version "1.6.0_0"
IcedTea6 1.4 (6b14-0ubuntu10) Runtime Environment (build 1.6.0_0-b14)
OpenJDK 64-Bit Server VM (build 14.0-b08, mixed mode)