How to install sun-java5-jdk in debian testing?

[Jianhua Shao <alex.sjh@gmail.com>]

I run debian testing in my box, which means, all update source in
source.list are from 'testing'
distribution. I want to compile Android manually, which needs
sun-java5-jdk, but there is no such
package in 'testing' distribution, only sun-java6-jdk is out there.
Maybe, I could add a 'stable' line in source.list to install that
package from 'stable' distribution. But I
wander is it a right way to install sun-java5-jdk using apt tools?
What is the best way to handle such problem?