B.C.A. (Semester III) (CGPA) Examination, 2017
CORE JAVA
Day Date: Wednesday, 19-04-2017 Max. Marks: 70
Time: 2:30 PM to 05.00 PM
N.B. 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 correct alternatives: 07
What will be the value of x after the following section of code
executes
int x


else

1 3 5 7
The lowest index that can be used with an array
is zero
is one
is determined by the array declaration
none of the above
Which block contains a block of program statements within
which an exception might occur?
catch try
throw final
Which is super class of all exception classes?
Throwable Exception
RuntimeException IOException
Many threads at a time can run in a single process?
True False
A final class not to be inherited?
True False
Which is the result of following code?
System.out.printIn("1 2 1
3 3 1 2 12
1 2 3 All of the above
Page 1 of 2
Q.1 Fill in the blanks: 04
An! Sign in an expression means
A case label is used with a statement.
Command to execute compiled java program is
Single quotes are used with constants of the type.
Q.1 State true or false: 03
Every statement with if must also include else.
The operator used to see if two strings have the same
characters.
AWT is an extended version of Swing.
Q.2 Explain any five data types in java. 05
What is variable? Explain with suitable example. 05
Write a note on Structure of java program. 04
Q.3 Explain protected, public and default Access control in java with
suitable example.
05
Explain the usage of this keyword with one suitable example. 05
Write a note on method overriding. 04
Q.4 Write a java program to input values of 3 two matrices and print
addition and subtraction of these values.
07
Write a program to input 10 values of one dimensional array and
print sum of odd and even values and there average.
07
Q.5 Explain java thread life cycle with suitable diagram. 07
Explain Try catch block with suitable example. 07
Q.6 What is constructor? Explain types of constructor with suitable
example.
07
Explain Inheritance with suitable example. 07
Q.7 Write short notes:
Listeners in java 04
Decision making statements 04
Static Key Word in java 04
Super Key Word 02