SCJP 5.0 Questions
01. MockExam - 01
02. MockExam - 02
03. MockExam - 03
04. AutoBoxing - 1 (10 questions)
05. AutoBoxing - 2 (10 questions)
06. Generics 1 - 6 Questions
07. Generics 2 - 7 Questions
08. Generics 3 - 10 Questions
09. Generics 4 - 10 Questions
10. Generics 5 - 10 Questions
11. Generics 6 - 10 Questions
12. Enum 1 - 10 Questions
13. Enums 2 - 10 Questions
14. Enums 3 - 15 Questions
15. Var Args 1 - 10 Questions
16. Var Args 2 - 10 Questions
17. SCJP 5.0 Mock Questions -1
18. Declaration,Access Control-1
19.Java File IO Package - 1
20.Java File IO Package - 2
21.Language Features - 1
22.New Api's - 1 (10 questions)
23.New Api's - 2 (12 questions)
24.Objective - 1 (20 questions)
25.Objective - 2 (10 questions)
26.Objective - 3 (10 questions)
27.Objective - 4 (10 questions)
28.Objective - 5 (10 questions)
29.Objective - 6 (10 questions)
30.Objective - 7 (10 questions)
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SCJP 5.0 - Enum Mock Questions - 1

Q1)Select all the correct statements regarding Enums (Select any 2 options)

  • a) All enums are subclasses of interface java.lang.Enum.
  • b) Enums is simply a data structure and hence it is not compiled to a .class file.
  • c) Enums enable you to define a new data type. For example, If you create an Enum 'Days' you can declare a variable of type 'Days'.
  • d) All instances of Enums are serializable by default.

Answer:

Q1)c, d
Explanation :

  • a) java.lang.Enum is a class and not an interface.
  • b) Enums are compiled to a .class file.
  • c) Enums enable you to define a new data type, in a manner similar to the way a class allows you to define a new data type.
  • d) Enums are subclasses of class java.lang.Enum, which implements the interface java.io.Serializable. If a class implements the interface java.io.Serialisable, its objects are serializable.

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