How do I detect whether 32-bit Java is installed on x64 Windows, only looking at the filesystem and registry?

Question

I need to determine whether a particular system has 32-bit Java installed. I\'m doing a remote query that only gives me access to the filesystem and registry, so I cannot a

Answer 1

Do you have access to the command prompt ?

Method 1 : Command Prompt

The specifics of the Java installed on the system can be determined by executing the following command java -version

Method 2 : Folder Structure

In case you do not have access to command prompt then determining the folder where Java.

32 Bit : C:\Program Files (x86)\Java\jdk1.6.0_30

64 Bit : C:\Program Files\Java\jdk1.6.0_25

However during the installation it is possible that the user might change the installation folder.

Method 3 : Registry

You can also see the version installed in registry editor.

1. Go to registry editor

2. Edit -> Find

3. Search for Java. You will get the registry entries for Java.

4. In the entry with name : DisplayName & DisplayVersion, the installed java version is displayed