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pyspark 'Unsupported class file major version 55' in Pychrm with anaconda plungin

I'm running s simple pyspark python script in Pycharm, whithin an anaconda env with Python 3.7 (pyspark version 2.4.4) and I got error :
pyspark.sql.utils.IllegalArgumentException: 'Unsupported class file major version 55'.
I've followed the potential solutions I found on stackoverflow but non of them works, I followed this one:
https://stackoverflow.com/a/54704928/12375559: I've added java1.8.0_221 in my system env variables:
but when I type java -version in Pycharm terminal it's still using java11.0.6:
>java -version
openjdk version "11.0.6" 2020-01-14
OpenJDK Runtime Environment (build 11.0.6+8-b765.1)
OpenJDK 64-Bit Server VM (build 11.0.6+8-b765.1, mixed mode)
Then I found this:
Pyspark throws IllegalArgumentException: 'Unsupported class file major version 55' when trying to use udf switch boot jdk of Pycharm (2xshift -> jdk -> select jdk 1.8)
So I navigated to Pycharm Switch IDE Boot JDK:
I can see the second option is 1.8 but without anaconda plugin, so I'm not sure what to do now because I don't want to mess up with my settings, might someone be able to help me please? Many thanks!

The 55 error is caused by an older Java version trying to execute Java version 11 code (in a .jar or .class file). So it seems like an older Java version (for example Java 8 (a JVM 8)) is used, but it encounters a part compiled in Java 11 (see 55 is Java 11).
Since Java 8 is less well supported, you could try to use Java 11 or newer (see Java version history). You could try to use PySpark 3.0.1 with Python 3.8 and Java 11. That way, you have recent parts that should be able to work together.
These links might also be helpful:
Specify Java version in a Conda environment
Spark Error - Unsupported class file major version

Java appears to be outdated when using java -jar command

I have recently been writing some Java programs on my Windows computer. I have been trying to use java -jar to run compiled jars in order to see errors more clearly, but when I try to do this, I get the following error:
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.UnsupportedClassVersionError: com/company/app/GUI has been compiled by a more recent version of the Java Runtime (class file version 57.0), this version of the Java Runtime only recognizes class file versions up to 52.0
This obviously means that my java version is outdated. However, when I took a look at the Java Updater, it shows that I am running the latest version.
Running java -version shows this:
java version "1.8.0_261"
Java(TM) SE Runtime Environment (build 1.8.0_261-b12)
Java HotSpot(TM) Client VM (build 25.261-b12, mixed mode)
So why is Command Prompt using an older version, and how do I change it?
Thank you for your help.

This error clearly indicates that you try to run a .jar file built with JDK 13 (major version 57) on a JRE/JDK 8 (major version 52) which is provided in PATH setting and thus invoked when running java -jar / java -version commands.
If you have JDK 13 installed on your machine, you need to check environment variable PATH and/or JAVA_HOME:
C:\Users\hp1>echo %JAVA_HOME%
C:\Java\jdk-13.0.2
C:\Users\hp1>echo %PATH%
C:\Windows\system32;C:\Java\jdk-13.0.2\bin
C:\Users\hp1>java -version
openjdk version "13.0.2" 2020-01-14
OpenJDK Runtime Environment (build 13.0.2+8)
OpenJDK 64-Bit Server VM (build 13.0.2+8, mixed mode, sharing)
If PATH refers JRE/JDK 8, you may create another variable and update PATH (copy non-java paths):
>set JAVA_13=**path_to_your_jdk_13**
>set PATH=C:\Windows\system32;%JAVA_13%\bin
If you do not have JDK 13 on your machine, to resolve this issue you should rebuild the .jar file to make it compatible with JDK 8 providing that the code is not using any features from the newer versions.

org/hibernate/HibernateException : Unsupported major.minor version 52.0 (unable to load class org.hibernate.HibernateException)

I'm doing this project where I have a webservice done in Java (HttpServlet) that uses Hibernate to select, insert and update information into a database and return an array of objects as JSON to whoever connects to the JSON endpoint.
I created it on my local computer and it works fine. However, I'm now trying to see how it would work on an actual server instead of locally.
So I connected through SSH to the server and copied the .war build to the Tomcat webapps folder, tried to run it, then I got the below error:
javax.servlet.ServletException: Servlet execution threw an exception
root cause java.lang.UnsupportedClassVersionError: org/hibernate/HibernateException : Unsupported major.minor version 52.0 (unable to load class org.hibernate.HibernateException)
So naturally I looked on StackOverflow to see what this error is about and I found that it's when you create your project in one version of Java and try to run the project on an inferior java machine. And I did that, indeed.
I created my project using Java 8 and I was running it on Java 7, on the server. So I updated the server to use Java 8. However, after updating to Java 8, I still get the same error.
If I run the java -version command, here's what I get:
LOCAL COMPUTER:
java version "1.8.0_121"
Java(TM) SE Runtime Environment (build 1.8.0_121-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode)
SERVER:
java version "1.8.0_111"
Java(TM) SE Runtime Environment (build 1.8.0_111-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.111-b14, mixed mode)
As you can see, I have java 1.8.0_121 on my local machine and java 1.8.0._111 on the server. Do you think there's any chance that that is the problem? Aren't they both Java 8?
Also, how does Tomcat know which java to use? I have 3 versions on the server (2 versions of the Java 7 and one version of the Java 8, java 1.8.0_111). How does Tomcat know which one to use?
To choose which one to use I used the sudo update-alternatives --config java command and chose the 1.8.0_111 version from there (the server is Ubuntu 12.04).
The problem is - I keep getting that error: java.lang.UnsupportedClassVersionError: org/hibernate/HibernateException : Unsupported major.minor version 52.0 (unable to load class org.hibernate.HibernateException) - and I can't run my project on the server.
Any suggestions?

When I got this error few days back, I had different versions of JDK and JRE running on my machine. I rectified it by setting the correct JRE path in Project's Build Path and also in the Window Preferences->Java->Installed JRE's. Also if you go to setenv.bat in your Tomcat\bin, there you specify which version of java should the Tomcat use by specifiying this:
set "JRE_HOME=%ProgramFiles%\Java\jre1.8.0_121", (obv, your version might be different so change that accordingly).
I hope that answers your query!
Edit: If you are wondering what setenv.bat is, refer: https://docs.oracle.com/cd/E40518_01/integrator.311/integrator_install/src/cli_ldi_server_config.html it explains what this bat file should contain.

As per the Documentation,
Hibernate 5.2 and later versions require at least Java 1.8 and JDBC 4.2.
Hibernate 5.1 and older versions require at least Java 1.6 and JDBC 4.0.
When building Hibernate 5.1 or older from sources, you need Java 1.7 due to a bug in the JDK 1.6 compiler.

Java Unsupported major minor Version 52? Why does this happen though I didn't use new features from Oracle Java 1.8?

I am just learning Java. I compiled and created a jar file for a simple quiz game with a light GUI. All done from Ubuntu 14.04 terminal manually with 'javac -d ...' and 'jar -xvmf...'
Here are my version details:
java version "1.8.0_11"
Java(TM) SE Runtime Environment (build 1.8.0_11-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.11-b03, mixed mode)
javac 1.8.0_11
I followed a tutorial dealing with Java SE 5.0 for creating it, so I guess no new features from '1.8' were used. It compiled and it worked fine for me. When my friend who uses OpenJDK (latest version available) in Ubuntu 14.04 tried running it he received a lot of errors including Unsupported major minor ... 52....
I don't have the full verbose output from the terminal. Is there any way to avoid this and why is this happening though I didn't use use any new features specific to the latest version?
I thought Java was supposed to be "Write Once ,Run Everywhere", and compatibility issues with even the simplest of things with just a slightly little older version involved makes me rethink things!

The version of the byte code doesn't depend on whether you use Java 8 new features or not. It simply depends on which compiler you use. A Java 8 compiler will by default produce Java 8 bytecode, unless you use the option -target to specify an earlier version.
Side note: your friend is not using the latest version of OpenJDK (which is Java 8), otherwise, he would not get this exception.

Error: Could not find or load main class version

I have downloaded Java on mac mavericks system. But when I type on terminal to see the Java version using command:
java version
I get the following error
Could not find or load main class version
I went to oracle website and tried a check to see if Java is installed on my system,which confirmed the Java7 is installed on the system. But why can I not see version in terminal?

Try
java -version
Without the minus sign it is trying to load a program called version.

java –version
will cause the same error (copied from webpage) as "–" is an em dash

java -version is the command to check java version
Download latest Java SE from Oracle site and install it. Then reopen cmd and check java version using java -version.
Set the Java path to bin and check it's version also. Both java and javac should be on same version.
In my case:
C:\Users\darshan>java -version
java version "1.8.0_121"
Java(TM) SE Runtime Environment (build 1.8.0_121-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode)
C:\Users\darshan>javac -version
javac 1.8.0_121