B.C.A. (Semester III) (CGPA) Examination Oct/Nov-2017
CORE JAVA
Day Date: Thursday, 16-11-2017 Max. Marks: 70
Time: 02.30 PM to 05.00 PM
Instructions: Q.1 and Q.7 are compulsory.
Attempt any two questions from Q. 3 and 4.
Attempt any one question from Q. 5 and 6.
Figures to the right indicate full marks.
Q.1 Choose the correct alternatives: 14
is java compiler.
Javac Java
Javadoc Javah
Which of the following is not a type of integer in java?
Byte Short
Long double
is exit controlled loop in java.
do-while while
for All of above
statement restart the current loop in java.
break goto
continue All of the above
members of the class are not accessible anywhere outside the
class .
Public Default
Private Protected
Static method is declared by using
Virtual Override
Final None of these
keyword is used to refer super class members in the sub class.
Super Sub
Internal None of these
Writing two or more methods with same name and same signature is called
Method overloading Method overriding
Inheritance None of these
A class that cannot be sub classed is class
Last class Final class
Abstract class None of these
10) Extending interface is
An interface can be sub interfaced from other interface.
Method of interface is implemented in the class
Method of interface is implemented in the interface
Method of interface is implemented in the structure
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SLR-CD-09
11) In java threads can be created
By extending thread class
By implementing runnable interface.
a or b
none of these
12) file contain compressed version of .class file.
Jar Object
Header All of the above
13) Members are available in the same package but not outside the
package.
Public Protected
Private Default
14) block can be used to handle any type of exception generated
within try block.
Finally Try
Throw Throws
Q.2 Attempt any two. 14
Explain looping control structures in Java.
Write a program to implement an interface.
What is static method? Explain with example.
Q.3 Attempt any two. 14
What is difference between method overloading and method overriding?
What are characteristics of Java?
Write a program to implement constructor overloading.
Q.4 Attempt any two. 14
Explain thread priority.
Explain byte stream classes in java.
Write a program to show the use of final keyword.
Q.5 What is event delegation model in java? 07
Explain thread life cycle. 07
Q.6 Write a program to implementation of single inheritance. 07
Explain Button component with its action listener. 07
Q.7 Write a note on. (Any two) 14
Thread synchronization
Layout manager
Structure of java program
Instance variable