How to solve the following this austere has wrote the class why with mistake

CodePudding user response:

CodePudding user response:

your inheritance of class and transformation is of the same class?

CodePudding user response:

Strengthen can turn, you this is the parent class to subclass?

CodePudding user response:

Please complete code stick out like you did not even put jPanell statement who know you is this jPanell jPanell object

CodePudding user response:

And you the NewJFrame. JP if you this subclass JP