java - How to add objects to a class that I cannot edit -


i using stddraw.java library , can't edit file. want add various items jframe such jmenu, buttons , others without compromising canvas , jframe.

i have tried stddraw.class.getmethods"

yet can't seem work. seems can use methods inside class , don't add of own or edit ones in.

the file available online. how able achieve above?

stddraw.java final class, if not mistaken. final class cannot extended. have 2 options:

  1. you can directly use source add own attributes , compile yourself, if license permits kind of usage.
  2. you can encapsulate stddraw.java class, own wrapper class , direct method calls using java reflection.

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