Question: Could you help me with this: Question A.1 Justify All Answers (3 Points Each Part) (a) Why are static methods are not allowed to use

Could you help me with this:

Could you help me with this: Question A.1 Justify All Answers (3

Question A.1 Justify All Answers (3 Points Each Part) (a) Why are static methods are not allowed to use the Java keyword this. (b) Give an example of a mutable object, and an example of a non-mutable object. (c) How can you create a class whose instances are non-mutable? (d) What is the signature of a method? (Ilustrate) e) How is the concept of a signature used? (f) Suppose BB is a subclass of AA. If aa and bb (respectively) are instances of AA and BB, which of these assignments are valid: aa-bb or bb-aa. Explain why this makes sense

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