install jdk on linux using alternatives

For installing Java, make that file executable by becoming root and type

# chmod a+x jdk-6urpm.bin
#./jdk-6urpm.bin

Check your default Java installation

# /usr/sbin/alternatives –config java

If latest Java installation is not avaliable, you must update alternatives with

# alternatives –install “usr/bin/java” “java” “/usr/java/jkd1.6.0_/bin/java” 2

Note that number 2 means that this Java installation will be shown as second when you run config java( if you have icedtea or open jdk for example, if not, type 1 ).
Now, check again Java with

# /usr/sbin/alternatives –config java

And select new JDK as default.