I tried to run a shell script to run an application in Java. I cannot post the whole script due to copyright. But the line executing Java is the following (with some modification)
$java_vm -Xmx128m -classpath "$CLASSPATH" -DDISPLAY=$DISPLAY -DPATH=$PATH -Djava.library.path=. -DEXEC_PLAT=$plat -jar $kp_dir/lib/SomeJAR.jar $args 2>&1
where $java_vm is the path to java
When executing the script, I got the following error:
Error: Could not find or load main class Files.NVIDIA Caused by: java.lang.ClassNotFoundException: Files.NVIDIA
I run this in WSL2 CentOS system. I found that this error could be fixed by removing -DPATH=$PATH option altogether. However, doing so will remove the application ability to access the internet (maybe because some important path for networking is removed)
Here is my PATH variable
/usr/lib/jvm/java-17-openjdk-17.0.1.0.12-2.el8_5.x86_64/bin:/usr/lib/jvm/jre-17-openjdk-17.0.1.0.12-2.el8_5.x86_64/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/usr/lib/wsl/lib:/mnt/c/Windows/system32:/mnt/c/Windows:/mnt/c/Windows/System32/Wbem:/mnt/c/Windows/System32/WindowsPowerShell/v1.0/:/mnt/c/Windows/System32/OpenSSH/:/mnt/c/Program Files/NVIDIA Corporation/NVIDIA NvDLISR:/mnt/c/WINDOWS/system32:/mnt/c/WINDOWS:/mnt/c/WINDOWS/System32/Wbem:/mnt/c/WINDOWS/System32/WindowsPowerShell/v1.0/:/mnt/c/WINDOWS/System32/OpenSSH/:/mnt/c/Program Files/WireGuard/:/mnt/c/Program Files (x86)/NVIDIA Corporation/PhysX/Common:/mnt/c/Program Files/usbipd-win/:/mnt/c/Program Files/Docker/Docker/resources/bin:/mnt/c/Users/myName/AppData/Local/Programs/Python/Python312/Scripts/:/mnt/c/Users/myName/AppData/Local/Programs/Python/Python312/:/mnt/c/Users/myName/AppData/Local/Microsoft/WindowsApps:/mnt/c/Users/myName/AppData/Local/Programs/Microsoft VS Code/bin:/mnt/c/Users/myName/AppData/Local/GitHubDesktop/bin:/mnt/c/Program Files/KS-Wireshark:/root/bin
I tried to run a shell script in WSL2 CentOS system. I expect it to run normally but I got this error which can be solved by removing -DPATH option. But doing so will remove the application networking capability
It is because java won't understand your PATH variable as one command(or arguemtns), but as multiple arguments because of space.
for example, the part of the path makes error occured:
:/mnt/c/Program Files/NVIDIA Corporation/NVIDIA NvDLISR
the command JVM understand will look like:
java_vm -Xmx128m -classpath "$CLASSPATH" -DDISPLAY=$DISPLAY -DPATH=:/mnt/c/Program Files/NVIDIA Corporation/NVIDIA NvDLISR
which JVM will only recognize :/mnt/c/Program Files/NVIDIA as the only path you entered, and Files/NVIDIA becomes the single argument, which indicates main class's name.
To solve this, add " when using variable, like "$PATH", and this will prevent space to be parsed from command parser.