How to fix java.lang.UnsupportedClassVersionError: test (class file version 52.65535) was compiled with preview features that are unsupported?

Question

I recieved this error when I trying to debug a java program with vscode:

java.lang.UnsupportedClassVersionError: 
test (class file version 52.65535) was comp         


        

Answer 1

In launch.json file, add "vmArgs": "--enable-preview" to your debug configuration.

{
   ...
   "vmArgs": "--enable-preview"
}