Need me and how to uninstall the old version of the JDK 7.0

Hi, all I have installed the two JDK 1.7 update 21 (1.7.0.210) and 51 (1.7.0.510), and so I wonder what I need to uninstall the old version of JDK 1.7 update 21, as they both appear in the list of "programs and features" in Windows. Secondly, I tried Java Uninstall Tool, it does state that "there is no old versions of Java on your computer. So I'm wondering can I just use "programs and features" it manually uninstall any version of Java, if I need to.

see you soon

Daiyue wrote:

As I have also implemented "JAVA_HOME" to "jdk1.7.0_21" when I tried to install Android Developer Kit, so I need update "JAVA_HOME" accordingly? The Setup was difficult, and I don't know if it's this set up "JAVA_HOME" step makes installing ADT work.

If the instructions for installation of this product requires setting a JAVA_HOME variable then Yes, otherwise no.

Try is certainly a good teacher, but I prefer to read documentation first tent to make it less educated.

Tags: Java

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