java gives error, how to replace old with correct version

[kisapzai]

my java programe is giving error when i use it for chat or downloads from utube . how can i replace it with valid version?

[davo]

depending on which version of windows you are using,for instance windows 7 and xp pro service pack 3. require a manual download.and can be uninstalled in add and remove programs,then reinstalled again with a new version.
http://java.com/en/download/index.jsp

but xp home edition sp 3 and perhaps others have it installed by default and you wont find it in add and remove programs,i did some research and have found a manual updade/ra download that may help.after clicking on this site look for the 'here' link.it will take you to a Binary and Source code download
 http://raproducts.org/wordpress/javaras-definitions-updated

i also found a java version tester
http://www.javatester.org/