BSc CS Sem 3 BSc CS Semester 3 (2019 2020) Oct 2020 CORE JAVA Question Paper - Mumbai University | munotes

Questions asked in this paper

• 2) Figures to the right indicate marks

1. Q3 Illustrations, in-depth answers and di: grams will be appreciated
2. Q4 Mixing of sub-questions is not allowed
3. Q1 Attempt All (Each of 5Marks) (15M)
   • (a) Select appropriate option from following 1, is features of object oriented programming
   • a) Inheritance b)Polymorphism c) All the above
4. Q2 Name the package containing all the Collection Framework classes:
   • a) d) java.lang
5. Q3 method is used to check whether a thread is still running or not
   • a) join() b) start() c) isAlive() of these
6. Q4 is entry point loop in java
   • a) for b) while() do—while() d) if
7. Q5 What would be behavior if the constructor has a return type?
   • c) Compilation and runs successfully d) Only String return type is allowed
   • (b) Fill in the blanks
8. Q1 output of the Java compiler is known as
9. Q2 uses to represent characters
10. Q4 is operator
11. Q5 Keyword is used to implement synchronization?
    • (c) Short answers
12. Q2 What is synchronization in reference to a thread?
13. Q3 Define exception
14. Q4 Define datatype
15. Q5 Define this keyword ir Q. 2 Attempt the following (Any THREE) (Each of (15M)
    • a) Enlist different statements in java and Explain looping statement in detail
    • b) Write a program to sort the elements of an Array in descending order
    • c) Explain use of super keyword with a proper program
    • d) Explain String Tokenizer with proper example
    • e) Write a program to perform method overriding for below figure
    • f) Explain inheritance and brief all types of it
16. Q3 Attempt the following (Any THREE) (Each of 5Marks) (15M)
    • a) Explain following statements
    • b) Write short note on serialization
    • c) Explain Socket class in detail
    • d) Write a client socket that will accept names from user and send to server. After receiving the names server socket should send the message “Good bye”
    • e) Write a program to demonstrate use of throw in exception handling
    • f) Explain in detail methods of thread life cycle
17. Q4 Attempt the following (Any THREE) (Each of (15M)
    • a) Write short note or wrapper classes
    • b) What do you mean by anonymous inner class? How to create it?
    • c) Write a short on event delegation model
    • d) Write a prograin to demonstrate the use of methods in Linkedlist
    • e) Write a program to deménstrate KeyListener on a simple Frame
    • f) Write short note on Checkbox in AWT and list inethods and constructors used in it
18. Q5 Attempt the following (Any THREE) (Each of (15M)
    • a) List and explain any five features of java in detail
    • b) Explain finally block in exception handling with proper program
    • c) What is collection framework?
    • d) Write a program to demonstrate use of static method in java Explain the following methods
    • ii. toCharArray()
    • iv. indexOf()

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