[root@home ~]# yum install java
Loaded plugins: langpacks, presto, refresh-packagekit
Package 1:java-1.7.0-openjdk-1.7.0.9-2.3.7.0.fc18.x86_64 already installed and latest version
Nothing to do

[root@home ~]# java -version
java version "1.7.0_09-icedtea"
OpenJDK Runtime Environment (fedora-2.3.7.0.fc18-x86_64)
OpenJDK 64-Bit Server VM (build 23.7-b01, mixed mode)

[root@home ~]# exit

logout

[vasya@home ~]$ /opt/libreoffice4.0/program/soffice
no suitable windowing system found, exiting.

[vasya@home ~]$ xclock
Warning: Missing charsets in String to FontSet conversion
[ЧАСИКИ запустились]

[vasya@home ~]$