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Java couldn't be found.... [message #1801876]

Tue, 29 January 2019 03:52

Paul Santos

Messages: 1
Registered: January 2019

Junior Member

I am trying to install eclipse, but I keep getting the following message:

Quote:

Unfortunately the Java version needed to run Eclipse Installer couldn't be found on your system. You need the following version or a higher version:

I am sure that I have the 64-bit version of the jre installed, as it is in the Program Files folder.

I also have the path set correctly. Powershell returns the following when I enter "java -version":

(actually I'm not allowed to include links as a new user)

I'm at a loss as to what to do from here. Further searches only reveal the above two as the most common problems.

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Re: Java couldn't be found.... [message #1801909 is a reply to message #1801876]

Tue, 29 January 2019 13:37

Nitin Dahyabhai

Messages: 3955
Registered: July 2009

Senior Member

Why would you need a link to show us the command line output?

Nitin Dahyabhai
Eclipse Web Tools Platform

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Re: Java couldn't be found.... [message #1801912 is a reply to message #1801909]

Tue, 29 January 2019 13:49

Ed Merks

Messages: 31702
Registered: July 2009

Senior Member

And could you post the complete exact path of where Java is installed on your machine. You should not need to set any system paths; the installer looks in the system registry...

Ed Merks
Professional Support: https://www.macromodeling.com/

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Re: Java couldn't be found.... [message #1802026 is a reply to message #1801912]

Thu, 31 January 2019 07:01

Larry Cai

Messages: 1
Registered: January 2019

Junior Member

Not OP but I have the exact same issue.

I did not have JAVA before, but I installed JDK 11.02 according to the URL provided, with all default installation options. I have restarted the system.

C:\Program Files\Java\jdk-11.0.2

I have verified that JAVA is properly installed with both the JAVA control panel and with CMD java -version

java version "1.8.0_171"
Java(TM) SE Runtime Environment (build 1.8.0_171-b11)
Java HotSpot(TM) Client VM (build 25.171-b11, mixed mode)

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Re: Java couldn't be found.... [message #1802039 is a reply to message #1802026]

Thu, 31 January 2019 08:46

Ed Merks

Messages: 31702
Registered: July 2009

Senior Member

The installer looks in the system registry, so if you only unzipped the Java 11 SDK but didn't install it,the installer won't find it. :-(

The Java 8 you do have installed is a 32 bit version, and that doesn't work. The installer also checks the system path, but as you notice, that points at Java 8 and is 32 bit. So you need to manually change the system path...

Ed Merks
Professional Support: https://www.macromodeling.com/

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Re: Java couldn't be found.... [message #1831694 is a reply to message #1802039]

Wed, 26 August 2020 17:52

Azer Khan

Messages: 1
Registered: August 2020

Junior Member

Saw this and while the above folks are right, somehow my default installation was 32-bit.

Go to console and write: "java -d64"

If the output says: "Error: This java instance does not support a 64-bit JVM." that means you need to uninstall java and then reinstall (just use the eclipse options).

To uninstall (Windows 10), go to Apps & Features, Search 'Java' and just hit uninstall.

Get the right version and you should be good to go :)

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