Questions – Exam Papers – Computer Sir Ki Class

Exam Paper: ICSE2016 (JAVA) No. of Q.26
SECTION A (40 marks)
Attempt all questions

Define Encapsulation.

What are keywords? Give an example.

Name any two library packages.

Name the type of error (syntax, runtime or logical error) in each case given below:
(i) Math.sqrt (36-45)
(ii) int a;b;c;

If int x[] = { 4, 3, 7, 8, 9, 10 }; what are the values of p and q?
(i) p = x.length
(ii) q = x[2] + x[5] * x[1]

State the difference between == operator and equals() method.

What are the types of casting shown by the following examples:
(i) char c = (char)120;
(ii) int x = ‘t’;

Differentiate between formal parameter and actual parameter.

Write a function prototype of the following:
A function PosChar which takes a string argument and a character argument and returns an integer value.

Name any two types of access specifiers.

Give the output of the following string functions :
(i) “MISSISSIPPI”.indexOf(‘S’) + “MISSISSIPPI”.lastIndexOf(‘I’)

Give the output of the following Math functions:
(i) Math.ceil(4.2)
(ii) Math.abs(-4)

What is a parameterized constructor?

Write down java expression for :
T = square root (A2 + B2 + C2)

Rewrite the following using ternary operator :
if(x%2 == 0)
System.out.print(“EVEN”);
else
System.out.print(“ODD”);

Convert the following while loop to the corresponding for loop :

int m = 5, n = 10;
while (n>=1)
{
System.out.println(m*n);
n- -;
}

Write one difference between primitive data types and composite data types.

Analyze the given program segment and answer the following questions :
(i) Write the output of the program segment
(ii) How many times does the body of the loop gets executed?
for(int m=5; m<=20; m+=5)
{
if(m%3 == 0)
break;
else
if(m%5 == 0)
System.out.println(m);
continue;
}

Give the output of the following expression :
a+=a++ + ++a + -–a + a-– ; when a = 7

Write the return type of the following library functions :
(i) isLetterOrDigit(char)
(ii) replace(char,char)

SECTION B (60 marks)
Attempt any four questions from this Section

Define a class named BookFair with the following description: [15]
Instance variables/Data members:
String Bname – stores the name of the book.
double price – stores the price of the book.
Member Methods:
(i) BookFair() – Default constructor to initialize data members.
(ii) void Input() – To input and store the name and the price of the book.
(iii) void calculate() – To calculate the price after discount. Discount is calculated based on the following criteria.
PRICE DISCOUNT
Less than or equal to Rs 1000 2% of price
More than Rs 1000 and less than or equal to Rs 3000 10% of price
More than Rs 3000 15% of price
(iv) void display() – To display the name and price of the book after discount.
Write a main method to create an object of the class and call the above member methods.

Using the switch statement, write a menu driven program for the following:
(i) To print the Floyd’s triangle
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
(ii) To display the following pattern
I
I C
I C S
I C S E
For an incorrect option, an appropriate error message should be displayed.

Special words are those words which starts and ends with the same letter.
Examples:
EXISTENCE
COMIC
WINDOW
Palindrome words are those words which read the same from left to right and vice-versa.
Example:
MALAYALAM
LEVEL
ROTATOR
CIVIC
All palindromes are special words, but all special words are not palindromes.
Write a program to accept a word check and print whether the word is a palindrome or only special word.

Design a class to overload a function SumSeries() as follows: [15]
(i) void SumSeries(int n, double x) – with one integer argument and one double argument to find and display the sum of the series given
below:
s = (x/1) – (x/2) + (x/3) – (x/4) + (x/5) … to n terms
(ii) void SumSeries() – To find and display the sum of the following series:
s = 1 + (1 X 2) + (1 X 2 X 3) + … + (1 X 2 X 3 X 4 X … 20)

Write a program to accept a number and check and display whether it is a Niven number of not. [15]
(Niven number is that number which is divisible by its sum of digits).
Example:
Consider the number 126.
Sum of its digits is 1 + 2 + 6 = 9 and 126 is divisible by 9.

Write a program to initialize the seven Wonders of the World along with their locations in two different arrays. Search for a name of the
country input by the user. If found, display the name of the country along with its Wonder, otherwise display “Sorry Not Found!” [15]
Seven wonders – CHICHEN ITZA, CHRIST THE RDEEEMER, TAJMAHAL, GREAT WALL OF CHINA, MACHU PICCHU, PETRA, COLOSSEUM
Locations – MEXICO, BRAZIL, INDIA, CHINA, PERU, JORDAN, ITALY
Example – Country Name: INDIA Output: INDIA – TAJMAHAL