Attributes (and methods) of class X declared with the public modifier are not accessible from instances of in class Y. True False
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- (Java) Identify the true statements, select all that apply: -Setters and getters are not required for public instance variables -Every private instance variable in a class definition must have a mutator method -A getter method has the same return-type as the field it retriees and takes no paramaters -A setter method is a return-type void and takes a parameter of tehe same type as its fieldIf class A is a subclass of class B, then A has access to all of B's instance variables, including private ones. True False4. Is it possible to declare abstract methods as private?a. Justify your answer.
- Answer both to get a like or don't attempt.Thanks Question: 3. _________is a correct annotation with respect to JUnits.4. Is it necessary to write the test class to test every class? __________Define a predicate int/1 such that ?- int(X). X = 0 ; X = 1 ; X = 2 ; ...This chapter uses the class rectangleType to illustrate how to overload the operators +, *, ==, !=, >>, and <<. In this exercise, first redefine the class rectangleTypeby declaring the instance variables as protected and then overload additional operators as defined in parts 1 to 3. Overload the pre- and post-increment and decrement operators to increment and decrement, respectively, the length and width of a rectangle by one unit. (Note that after decrementing the length and width, they must be positive.) Overload the binary operator – to subtract the dimensions of one rectangle from the corresponding dimensions of another rectangle. If the resulting dimensions are not positive, output an appropriate message and do not perform the operation. The operators == and != are overloaded by considering the lengths and widths of rectangles. Redefine the functions to overload the relational operator by considering the areas of rectangles as follows: Two rectangles are the…
- Discuss the concept of access modifiers (e.g., public, private, protected) in the context of method overriding.Explain why accessors are better than making secret types public in each of the following three situations.Question ¹ Computer Science Whenever you need to use the logical size of the bag within a class definition, run len(self) instead of referring directly to the instance variable self.size. true or false
- Q# Which of the following might have only method signatures? Group of answer choices 1. An interface 2. An abstract class and a concrete class 3. An abstract class 4. An interface and an abstract class 5. None of these, they all require the implementation. 6. A concrete classThis chapter uses the class rectangleType to illustrate how to overload the operators +, *, ==, !=, >>, and <<. In this exercise, first redefine the class rectangleType by declaring the instance variables as protected and then overload additional operators as defined in parts 1 to 3. Overload the pre- and post-increment and decrement operators to increment and decrement, respectively, the length and width of a rectangle by one unit. (Note that after decrementing the length and width, they must be positive.) Overload the binary operator – to subtract the dimensions of one rectangle from the corresponding dimensions of another rectangle. If the resulting dimensions are not positive, output an appropriate message and do not perform the operation. The operators == and != are overloaded by considering the lengths and widths of rectangles. Redefine the functions to overload the relational operator by considering the areas of rectangles as follows: Two rectangles are the…Please provide three advantages of employing accessors rather than making secret types public.