For running the Processing sketch directly from VScode workspace, a Java plugin has to be installed in VScode, so that it can run java code in the VScode sandboxed container.

• https://code.visualstudio.com/docs/languages/java

Currently, the Preprocessed Processing file is run using shell commands on migrating to the above users will not be able to run Processing sketch until this extension is installed.!

Need Processing community's concern regarding this.