Answer: Enum and object conversion and casting : Questions « Object Oriented « SCJP

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SCJP » Object Oriented » Questions

6.14.14.Answer: Enum and object conversion and casting

Exception in thread "main" java.lang.Error: Unresolved compilation problem: 
	Type mismatch: cannot convert from Object to MainClass.Spice

	at MainClass.main(MainClass.java:9)

Assigning an Object reference to an enum requires a cast

6.14.Questions
	6.14.1.	An anonymous inner class must appear inside a block of code(True/False).
	6.14.2.	Answer: anonymous inner class definition
	6.14.3.	Anonymous inner classes may not call the enclosing class' synchronized methods(True/False)/
	6.14.4.	Answer: anonymous class and synchronized methods
	6.14.5.	Anonymous inner classes may only call final methods of the enclosing class(True/False).
	6.14.6.	Answer: Anonymous inner classes and final methods
	6.14.7.	Anonymous inner classes may only read and write final variables of the enclosing class(True/False).
	6.14.8.	Answer: Anonymous inner classes and final variables
	6.14.9.	Will the following code compile(enum and object)?
	6.14.10.	Answer: enum and object
	6.14.11.	Will the following code compile(Enum and object conversion)?
	6.14.12.	Answer: Enum and object conversion
	6.14.13.	Will the following code compile(Enum and object conversion and casting)?
	6.14.14.	Answer: Enum and object conversion and casting
	6.14.15.	Will the following code compile(enum casting)?
	6.14.16.	Answer: enum casting
	6.14.17.	An anonymous inner class may implement at most one interface(True/False).
	6.14.18.	Answer: anonymous inner class and interface
	6.14.19.	An anonymous inner class may extend a parent class other than Object(True/False).
	6.14.20.	Answer: anonymous inner class and parent class
	6.14.21.	An anonymous inner class that implements one interface may extend a parent class other than Object(True/False).
	6.14.22.	Answer: anonymous inner class and interface and parent class
	6.14.23.	Which methods return an enum constant's name?
	6.14.24.	Answer: enum and constant value
	6.14.25.	For a static nested class, you must have a reference to an instance of the enclosing class in order to instantiate it (True/False)
	6.14.26.	Answer: static nested class
	6.14.27.	For a static nested class, it does not have access to non-static members of the enclosing class(True/False)
	6.14.28.	Answer: static nested class(2)
	6.14.29.	For a static nested class, its variables and methods must be static(True/False)
	6.14.30.	Answer: static nested classes(3)
	6.14.31.	For a static nested class, if the outer class is named MyOuter, and the nested class is named MyInner, it can be instantiated using new MyOuter.MyInner();(True/False)
	6.14.32.	Answer: static nested classes(4)
	6.14.33.	For a static nested class, it must extend the enclosing class(True/False)
	6.14.34.	Answer: static nested class(5)
	6.14.35.	Which create an anonymous inner class from within class Bar?
	6.14.36.	Answer: anonymous inner class
	6.14.37.	A method-local inner class must be marked final(True/False)
	6.14.38.	Answer: method local inner class(1)
	6.14.39.	A method-local inner class can be marked abstract(True/False)
	6.14.40.	Answer: method local inner class(2)
	6.14.41.	A method-local inner class can be marked public
	6.14.42.	Answer: method local inner class(3)
	6.14.43.	A method-local inner class can be marked static(True/False)
	6.14.44.	Answer: method local inner class(4)
	6.14.45.	A method-local inner class can access private members of the enclosing class(True/False)
	6.14.46.	Answer: method local inner class(5)
	6.14.47.	What is the result(inner class)?
	6.14.48.	Result: inner class
	6.14.49.	What is the result (inner class(2))?
	6.14.50.	Answer: inner class(2)
	6.14.51.	What is the result(abstract class)?
	6.14.52.	Answer: using abstract class
	6.14.53.	What is the result(initialize the inner class)?
	6.14.54.	Answer: initialize the inner class
	6.14.55.	What is the result(extends inner class)?
	6.14.56.	Answer: extends inner class
	6.14.57.	What is the result(reference variable in outter class)?
	6.14.58.	Answer: reference variable in outter class
	6.14.59.	What is the result(Arrays.sort)?
	6.14.60.	Answer: Arrays.sort

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