Model Test Paper 9 (Unsolved)
Maximum Marks: 100
Time allowed: Two hours
Answers to this
Paper be written on the paper provided separately
must
You will not be allowed to write during the first 15 minutes.
This time is to be spent in the question paper reading
The time given at the head of this Paper is the time allowed for writing the answers.
This Paper is divided into two Sections.
Attempt all questions from Section A and any four questions from Section B.
The intended marks for questions or parts of questions are given in brackets I 1.
SECTION A
(Attempt all questions from this Section)
Question 1
20
Choose the correct answers and write the correct
option.
) Declaration is not to declare "value" to a variable; it is to declare the of the variable.
(a) Type (b) Range (c) Size (d) None of these
(ii) Which of the following is NOT reserved
a
keyword in Java?
(a) abstract (6) extends (c) transient
(d) None of these
(ii) Which of the following be
method signature of the method area with two int
can a
(a) public int area (int length, int breadth);
arguments?
(b) area (int, int);
(c) area (2 int); (d) int area (int);
(iv) In Java, linefeed is given by:
(a) lb (b) 1 (c) t (d) In
(v) What does the to String (float) method do?
(a) It returns random string based on the argument as seed value.
a
(b) It returns a String object based on the input whose contents are the number.
(c) Returns float that is the
a same as the input but of double data type.
(d) None of these
(vi) What does the method new do?
(a) It creates a new integer
(b) It creates an of the type following
object new keyword and returns its reference
(c) It resets all data members to 0 or null (d) It returns a null object reference
(vii) What header files must you import in order to be able to use:
Point ptl= new Point(100,100);
(a) Java.math.* (b) java.util. *
(c) java.awt.Point (d) java.lang.math
(viii) Which method is used to remove the leading and trailing whitespace?
(a) trim() (b) troll() (c) cut() (d) toTrim()
84 Coal'h ICSCc.
What is the output of the following code?
(ix) tring str This is a string";
Str
la00lean resuit s t r . s t a r t sWith(This");
(d) None of these
(a) true (b) false (c) can't be said
Name a Java statement to extract the second character of the string str.
(
(a) System.out.println(str.charA(): (b) System.out.println(charAt(o):
(d) System.out.println(str.CharAt()).
(c) System.out.println(str.char(1):
Choose the odd one out:
(d) sqrt
(a) replace() (b) startsWith() (c) lastlndexOf)
Give the output of the following Java statement:
(Ni)
"TRANSPARENT".1olLowerCase() (d) This is an
erroneous
statement
TRANSPARENT
(a) Transparent (b) transparent (c)
ho
metnous.
variables, classes and
are Java rescrved words or titles given to
(1) eitne (d) Identifiers
(c) Punctuators
(a) Keywords (b) Operators does.
the method
collection of statements that define what
function, the contains a
(iv) In a
(b) Parameters list
(a) Return statement
(c) Method body (d) None of these parameters.
that has no
constructor
not define constructor for a class the compiler will supply a
(A) Ifyou do any (d) Default
(a) Normal (b) Real (c) Complex character.
returns a
integer as an argument and
Write the prototype of a function check which takes an
(Avi) (b) Character
check (integer):
(a) char check (int); check (Character);
(c) char check(Integer);
(d) Integer
initialize it as h =
new int[6];
If you have a 2 dimensional array, h, and
(xvii) brackets.
It gives an error. Why? with values within square
h new int[][],
be initialized with
=
dimensional So must ,
(a) It is 2
Not as new int[6].
elements
values to fill in the
b) It does not know what use.
initialization. You can directly
variable does not need
(c) The subscripted
(d) None of these search?
search terminate in one
In which case would binary element is the target
(xvii)
is the target
(b) If the first
middle element
(a) If the (d) In all cases
element is the target
(c) If the last collector solve?
the garbage
(xix) Which problem does Java program
between objects in a
c o m m o n memory
It makes use of when not used anymore
(a) new and reclaim memory
variables created using
(b) It looks at all (d) None of these
to allocate memory
(c) It uses the heap memory
function do in Java?
below call to a
(xx) What does the
chrt (double a);
(b) It returns the cube root of a
root of a
the square
(a) It returns
(d) None of these
the cube of a
(c) It returns
Question 2 121
the Java expression:
i) Gives the valuc of ("opi")
("abc") & Optim".beginsWith
abracad".endsWith
85
(1) What is the difference in the effect of the calling the functions at (1) and (2) in the below code,
codes
assuming the
are written correctly inside the functions?
public static void
21
main (String[1 args)
1nt a 3, b 7
Integer g new Integer (a);
Integer h =
new
Integer (b);
Swapl (a, b);
Swap2 (g, h);
(ii) Find the value of the Java
expression: 21
(int) Math. sqrt (Math.pow (4,2) +
Math.pow (7, 2) ) ;
(IV) What does the following code do, assuming all initializations are done
for (int i
correctly 21
=
0;i< 10; i ++)
yl (i+2) %10] = x[il;
(V) Between a constructor and method, which
a is necessarily called in a Java program. 2
(vi) Name the kind of constructor called in the
statement below. 121
Caller a new Caller (2,3);
(vii) What kind of statement is left blank in the below correct function definition'?
[21
public int add(int a, int b)
(1)
(vii) Of the below method calls in the main) method, which method call is likely to work? 121
public static void main (String [] args)
int a = 3
Integer b new Integer (a+1);
(1) Update (a) ;
(2)Update (b);
(ix) Suppose that there is an aray in code with the name ar. How can you deduce the highest valued index of the array?12]
(x) Is the below line vaid? 121
String str = abcde'";
SECTIONB
(Answer any four questions from this Section)
The answers in the section should consist of the programs in either Blue) environment or any
program environment with java as the base.
Each program should be written using variable description/memonic codes so that logic of the
program is clearly depicted.
Flowcharts and algorithms are not required.
Question 3 15
Consider the sentence as given below:
Blue bottle is in Blue bag lying on Blue carpet
Wrilc a
program to
assign the given sentence to a word Bluc with Red at
to string variable.
cnce
Keplacc the
variable. Replace
all its oceurrence. Display the new
string as shown below:
Red bottle is in Red bag on lying Red carpet
Question 4 15
A message is to be converted by adding 10 to the total of the ASCIl code of characters in the stalement Ev
below. write a
program to print the statement into a coded
For example:
messagc
If a string is YORO HAS SMILIED Uhen, the coded nessage is cYUY RKJ /ON
Question 5 15
Define a c l a s s to input a string and convert it into uppercase and print thc pair o f vowels and numDcr p
of vowels occurring in the string t.
Example
Input:
"BEAUTIFUL BEAUTIES"
Output:
Pair of vowels EA, AU, EA, AU, IE
No. of pair of vowels: 5.
Question 6 15
Design a class to overload a function compare ( ) as follows
the greater of the two integers.
(a) void compare (int, int) - to compare two integer values and print
value
character with higher numeric
(b) void compare (char, char) - to compare the numeric value of two
and print the longer of the two.
(C) void compare (String, String) to compare the length of the two strings
-
|15
Question 7
is more than any other digit in the
A Clarit number is a number such that the number of zeroes in the number
numbers are Clarit numbers or not.
number. Write a class to take as input numbers and declare whether the
For example:
201 (Not)
2003 (Is)
120300 (is)
3211 (Not)
Question 8 [15
and prints all the factors of the number smaller than itself.
Define a class that accepts an integer
n
For example: 8 as input gives
12 4 as outputs.
