How to install Sun JDK under Ububntu 10.4

1. Open the Application Center.
2. Main menu / Application sources
3. Page - Other Software
4. Check - «http://archive.canonical.com/ubuntu lucid patner»
5. Close
6. Go to the Application Center main window page Patners Canonical, use search field for «jdk».

• Dowload an appropriate distro from http://www.oracle.com/technetwork/java/javase/downloads/index.html
• Unpack it to /usr/lib/jvm and rename to java-7-sun-1.7.0 (or whatever number it is)
• Make symbolic link to the directory:

ln -s java-7-sun-1.7.0 java-7-sun

• Get the last number in the list:

sudo update-alternatives --config java

• Add new jdk to the list:

sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/java-7-sun/jre/bin/java 3

• Choose new jdk by typing it's number:

sudo update-alternatives --config java

• Check version:

java -version

A. We have to replace symlink /etc/alternatives/java.

1. Delete current OpenJDK symlink
2. Using Midnight Commander open directory /etc/alternatives/ from one side
3. and pose cursor on file /usr/lib/jvm/java-6-sun/jre/bin/java
4. Make symlink: Ctrl+x, s.

or: B. More elegant way:

sudo update-alternatives --config java

and select the option that has the path /usr/lib/jvm/java-6-sun/jre/bin/java