Install build java utility:
aptitude install java-package
After that – go to link and download archive for your system (in my case it was: Linux x64 131.8 MB jdk-7u51-linux-x64.tar.gz). Compile deb-package:
(We could download rpm package and used the alien utility to convert it to deb, but [we are not looking for easy ways]||[it seems make-jpkg compiled package will be more correct] ). Now install it:
su dpkg -i oracle-j2sdk1.7_1.7.0+update51_amd64.deb
To connect it to the browser, we do so:
mkdir ~/.config/chromium/plugins ln -s /usr/lib/jvm/j2sdk1.7-oracle/jre/lib/amd64/libnpjp2.so ~/.config/chromium/plugins/libjavaplugin.so
Even without restarting the browser, you can immediately go to the link and check the version of java.