Cannot find Java home on BigSur 11.1

[lqlau]

I'm submitting a…

• bug report
• feature request
• other

Short description of the issue/suggestion:
This is the Java output when running commands from terminal:

~ % /usr/libexec/java_home -V
Matching Java Virtual Machines (2):
    1.8.0_282 (x86_64) "AdoptOpenJDK" - "AdoptOpenJDK 8" /Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home
    1.8.0_272 (x86_64) "Amazon" - "Amazon Corretto 8" /Library/Java/JavaVirtualMachines/amazon-corretto-8.jdk/Contents/Home
/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home

~ % /usr/libexec/java_home --xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<array>
	<dict>
		<key>JVMArch</key>
		<string>x86_64</string>
		<key>JVMBundleID</key>
		<string>net.adoptopenjdk.8.jdk</string>
		<key>JVMEnabled</key>
		<true/>
		<key>JVMHomePath</key>
		<string>/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home</string>
		<key>JVMName</key>
		<string>AdoptOpenJDK 8</string>
		<key>JVMPlatformVersion</key>
		<string>1.8.0_282-b08</string>
		<key>JVMVendor</key>
		<string>AdoptOpenJDK</string>
		<key>JVMVersion</key>
		<string>1.8.0_282</string>
	</dict>
	<dict>
		<key>JVMArch</key>
		<string>x86_64</string>
		<key>JVMBundleID</key>
		<string>com.amazon.corretto.8</string>
		<key>JVMEnabled</key>
		<true/>
		<key>JVMHomePath</key>
		<string>/Library/Java/JavaVirtualMachines/amazon-corretto-8.jdk/Contents/Home</string>
		<key>JVMName</key>
		<string>Amazon Corretto 8</string>
		<key>JVMPlatformVersion</key>
		<string>1.8</string>
		<key>JVMVendor</key>
		<string>Amazon</string>
		<key>JVMVersion</key>
		<string>1.8.0_272</string>
	</dict>
</array>
</plist>

This is the console log:

default	08:09:20.463280-0800	syslog	[50825][universalJavaApplicationStub] [StubDir] /Applications/Test Software.app/Contents/MacOS
default	08:09:20.477005-0800	syslog	[50825][Test Software] [PlistStyle] Apple
default	08:09:20.530448-0800	syslog	[50825][Test Software] [JavaRequirement] JVM minimum version: 1.8+
default	08:09:20.533828-0800	syslog	[50825][Test Software] [JavaRequirement] JVM maximum version:
default	08:09:20.544742-0800	syslog	[50825][Test Software] [Language] en_CA
default	08:09:20.554658-0800	syslog	[50825][Test Software] [JavaSearch] Checking for $JAVA_HOME ...
default	08:09:20.558073-0800	syslog	[50825][Test Software] [JavaSearch] ... found JAVA_HOME with value Contents/Resources/Frameworks/adoptopenjdk-8.jdk/Contents/Home
default	08:09:20.569880-0800	syslog	[50825][Test Software] [JavaSearch] Searching for JavaVirtualMachines on the system ...
default	08:09:20.585433-0800	syslog	[50825][Test Software] [JavaSearch] ... found JVM: :/bin/java
default	08:09:20.588815-0800	syslog	[50825][Test Software] [JavaSearch] Filtering the result list for JVMs matching the min/max version requirement ...
default	08:09:20.607095-0800	syslog	[50825][Test Software] [JavaCommand] ''
default	08:09:20.613929-0800	syslog	[50825][Test Software] [JavaVersion]
default	08:09:20.620956-0800	syslog	[50825][Test Software] [EXIT 3] No suitable Java version found on your system!
This program requires Java  8 or later.

I'm using universalJavaApplicationStub 3.1.0.

Steps to reproduce the issue/enhancement:

1. [First Step]
2. [Second Step]
3. [Other Steps...]

What is the expected behavior?

What is the current behavior?

Do you have screenshots, GIFs, demos or samples which demonstrate the problem or enhancement?

What is the motivation / use case for changing the behavior?

Please tell us about your environment:

• universalJavaApplicationStub version: 3.1.0
• Mac OS version: BigSur 11.1
• Java version(s): 1.8

Other information (e.g. related issues, suggestions how to fix, links for us to have context)

[tofi86]

The launcher found a JAVA_HOME property with the value :/bin/java but this isn't a valid path to a Java Home directory...

Please unset or fix the JAVA_HOME environment variable as it takes precedence over any other values.

[lqlau]

Thank for the fast reply. I don't think ":/bin/java" is due to JAVA_HOME. In my Info.plist file, I do define JAVA_HOME:

    <key>LSEnvironment</key>
<dict>
    <key>JAVA_HOME</key>
	<string>Contents/Resources/Frameworks/amazon-corretto-8.jdk/Contents/Home</string>
</dict>

Once I copied the JDK into the Frameworks folder, everything just works now. It wasn't there before and so the universalJavaApplicationStub began to look for Java on my system and I guess it found ":/bin/java" somehow.

[tofi86]

Ah well, you're right...

Now that I formatted your initial post with proper codeblocks I see the problem. Sorry for not having seen this in the first place.

I added some more debug logging for this case with commit 0880026

20:26:15.320409+0100	[5775][App] [JavaSearch] Checking for $JAVA_HOME ...
20:26:15.331929+0100	[5775][App] [JavaSearch] ... found JAVA_HOME with value Contents/Resources/Frameworks/amazon-corretto-8.jdk/Contents/Home
20:26:15.339730+0100	[5775][App] [JavaSearch] ... parsing JAVA_HOME as relative path inside the App bundle to the executable '/Users/xxxxx/dev/universalJavaApplicationStub/test/test.app/Contents/Resources/Frameworks/amazon-corretto-8.jdk/Contents/Home/bin/java'
20:26:15.361691+0100	[5775][App] [JavaSearch] ... but no 'java' executable was found at the JAVA_HOME location!

The found JVM: :/bin/java resulted from another issue (#93) where /usr/libexec/java_home/ did not return any registered JDKs. This has been fixed in the meantime.

So this process should be more stable now.