[SOLVED] Instantiating a particular class constructor using reflection

Processing Coding Questions
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In my own sketch example, I’ve only got 1 inner class called Inner.
I get its Class by running the try {} block below calling Class.forName():

Docs.Oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Class.html#forName(java.lang.String)

  try {
    innerCls = Class.forName(appCls.getName() + '$' + "Inner");
  }

For class AbstractExp, simply replace the String “Inner” w/ “AbstractExp”.