I install JAVA, but JAVA programs claim there is no JAVA installed??

sdowney717 · 17 Feb 2022

I have been whammied for over an hour with this now.
I want to run Yawcam a JAVAprogram. I got it working fine in windows 11, but on theis windows 10 ver 1909 PC, JAVA claims to install, but apparently NO.
How can I get JAVA installed properly?
I have installed and uninstalled at least 5 versions of JAVA so far.

I install JAVA, but JAVA programs claim there is no JAVA installed??-image.png

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Everytime after the installer says I have successfully installed JAVA, the JAVA uninstaller and tester says there is no JAVA installed when ran
.
Loop de loop, I am getting loopy with this.

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here is what PATH says
Microsoft Windows [Version 10.0.18363.719](c) 2019 Microsoft Corporation. All rights reserved.C:\Users\sdown>path

PATH=C:\ProgramData\Oracle\Java\javapath;C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System 32\WindowsPowerShell\v1.0\;C:\Windows\System32\OpenSSH\;C:\Program Files (x86)\Common Files\Acronis\VirtualFile\;C:\Program Files (x86)\Common Files\Acronis\VirtualFile64\;C:\Program Files (x86)\Common Files\Acronis\SnapAPI\;C:\Users\sdown\AppData\Local\Microsoft\WindowsApps;

C:\Users\sdown>

Callender · 17 Feb 2022

I haven't installed Java for some years but you might want to run the dedicated uninstaller.

https://www.java.com/en/download/hel...ml#browserinfo

Then reboot and try the offline installer,

https://www.java.com/en/download/manual.jsp

Windows Offline
filesize: 71.58 MB

Or one third party app that I use and can update/ install some programs would download according to the list of URL's from:

Thank you for downloading Java Runtime Environment 8.0 Update 321 - FileCroco.com

RE: Your webcam issues.

I have no experience of what you are trying to do and don't use VLC but you might take a lookat Webcamoid. Portable version available. I've only used it for recording in the past.

Webcamoid, The ultimate webcam suite!

Virtual camera support . webcamoid/webcamoid Wiki . GitHub

The only experience I've had with the program is here:

HD 1080P Webcam Not Working

MaloK · 17 Feb 2022

Hi,

Can you post the Yawcam startup command line ?

idgat · 17 Feb 2022

Been there, experienced that. Coupla hints/tricks ...

- make sure you install the right bit version. Even if your OS is 64bit, Java version must match the program bit version - 32bit(x86) or 64bit
- on a couple of occasions, I had to re-install the programs after Java was installed ... the programs didn't have the "intelligence" to look for a (subsequent) installed Java, they would only look for it during the installation process
- on one occasion, no matter which way I installed, I still had to manually go into the program settings, where there turned out to be a manual option to point the program to the Java installation (path).

Callender · 17 Feb 2022

Seems to have been reported may times and the solution might be to edit the path:

Yawcam doesn't start - Java problem - Yawcam

sdowney717 · 17 Feb 2022

I copied the Yawcam installed folder and ran it from cmd, and like I thought, it can not find JAVA

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Java -version shows this

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running configure JAVA shows this, I installed 9, then installed 1.8, and did not uninstall 9
Yawcam can run either 64 or x86, it decides by itself

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from working win11 PC, this is java -version

Microsoft Windows [Version 10.0.22000.493]
(c) Microsoft Corporation. All rights reserved.
C:\Users\sdown>java -version

java version "9.0.4"Java(TM) SE Runtime Environment (build 9.0.4+11)
Java HotSpot(TM) 64-Bit Server VM (build 9.0.4+11, mixed mode)

C:\Users\sdown>

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DOES WINDOWS 10 BLOCK JAVA?? I am pretty sure 9.04 expired in 2018
BUT, I have also installed just JAVA 8 and it still does not work on win 10.

Callender · 17 Feb 2022

I reckon you'd have to add Java to PATH in enviromment variables.

I install JAVA, but JAVA programs claim there is no JAVA installed??-path.png

Run > type sysdm.cpl and switch to Advanced tab. Then evironment variables the PATH in the lower pane.
i can't tell you exactly what to add as I don't have JAVA.

Refer to previous link.

MaloK · 17 Feb 2022

Hi,

You can use any version of java you Want, But you need to construct a complete command line ex:

Code:

"C:\Program Files (x86)\Java\jre1.8.0_301\bin\javaw.exe" -jar "C:\!TEMP!\Ubiquiti\ubnt-discovery-v2.5.1.jar"

sdowney717 · 17 Feb 2022

MaloK said:

Hi,

You can use any version of java you Want, But you need to construct a complete command line ex:

Code:

"C:\Program Files (x86)\Java\jre1.8.0_301\bin\javaw.exe" -jar "C:\!TEMP!\Ubiquiti\ubnt-discovery-v2.5.1.jar"

Yawcam is an exe file. Yawcam.exe
I agree if it was a jar file.

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I seem to recall with JAVA, you could tell the OS system which JAVA version to use?

MaloK · 17 Feb 2022

Thanks,

Sorry for the misconception. You must assess that the Bin directory of required version of java is correctly qualified in the path statement...