about installing java?

Question

i was having jdk 1.3 for practicing my java programs.
i want to install jdk 1.5 insted of 1.3.
i am having the setup file jdk-1_5_0_06-windows-i586-p
(is it a proper application which )
(for jdk 1.3 i use c:/jdk1.3/bin; in environmental variable in path setting)
(will the setting be same for this by replacing 1.5 insted of 1.3)

Answer 1

If you have jdk1.3 alread uninstall that first and delete the path in your environment var,Then install jdk5 from sun .
set the class path var to dir/jdk/bin in
system-->Advanced-->Environment variables-->then set the classpath variable---ok
Don't just change 1.3 tp 1.5 as jdk 1.5 is called as jdk5.So please copy the exact location where jdk is i.e.,dir/jdk/bin
and give in path.
make sure that if you have JAVAHOME var defined in system vars give same jdk path for that.
All the best

Answer 2

If you install JDK 5, it should change the environment variable for you.

If it doesn't, and you use a similar path for the JDK 5 install, then, yes, you can manually change the environment variable.