Go to the URL: http://jscpreview.sfbay/javase/6/download.jsp and download jdk-6-beta2-linux-amd64-rpm.bin package. Try to install this package as root. Following error messsages will appear:

ptakopysk:/home/tester # sh jdk-6-beta2-linux-amd64-rpm.bin
Pre-Release Software Evaluation Agreement
...
Do you agree to the above license terms? [yes or no]
yes
Unpacking...
Checksumming...
Extracting...
UnZipSFX 5.50 of 17 February 2002, by Info-ZIP (###@###.###).
  inflating: jdk-6-beta2-linux-amd64.rpm
Preparing... ########################################### [100%]
   1:jdk ########################################### [100%]
Unpacking JAR files...
        rt.jar...
        jsse.jar...
        charsets.jar...
        tools.jar...
        localedata.jar...
cp: cannot stat `/usr/java/jdk1.6.0/jre/lib/desktop/icons/hicolor/48x48/apps/sun-java.png': No such file or directory
cp: cannot stat `/usr/java/jdk1.6.0/jre/lib/desktop/icons/hicolor/48x48/apps/sun-javaws.png': No such file or directory
cp: cannot stat `/usr/java/jdk1.6.0/jre/lib/desktop/icons/hicolor/48x48/apps/sun-jcontrol.png': No such file or directory
cp: cannot stat `/usr/java/jdk1.6.0/jre/lib/desktop/icons/hicolor/48x48/mimetypes/gnome-mime-text-x-java.png': No such file or directory
cp: cannot stat `/usr/java/jdk1.6.0/jre/lib/desktop/icons/hicolor/48x48/mimetypes/gnome-mime-application-x-java-archive.png': No such file or directory
cp: cannot stat `/usr/java/jdk1.6.0/jre/lib/desktop/icons/hicolor/48x48/mimetypes/gnome-mime-application-x-java-jnlp-file.png': No such file or directory
cp: cannot stat `/usr/java/jdk1.6.0/jre/lib/desktop/applications/sun_java.desktop': No such file or directory
cp: cannot stat `/usr/java/jdk1.6.0/jre/lib/desktop/applications/sun_java.desktop': No such file or directory
cp: cannot stat `/usr/java/jdk1.6.0/jre/lib/desktop/applications/sun-java.desktop': No such file or directory
cp: cannot stat `/usr/java/jdk1.6.0/jre/lib/desktop/applications/sun-javaws.desktop': No such file or directory

Done.