JAVA practical Exam Questions (1).docx

INTERNATIONAL SCHOOL
Shaikpet, Hyderabad-500008
COMPUTER APPLICATIONS(Sample Practical Questions)
2022-23
1. Write a program to accept the year of graduation from school as an integer value from the user.
Using the Binary Search technique on the sorted array of integers given below, output the
message “Record exists” if the value input is located in the array. If not, output the message “
Record does not exist”.
{1982,1986, 1987, 1993, 1996, 1999, 2003, 2006, 2007, 2009, 2010}
2. 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”.
Seven wonders- CHICKEN ITZA, CHRIST THE REDEEMER, TAJ MAHAL, GREAT
WALL OF CHINA,
MACHU PICCHU, PETRA, COLOSSEUM.
Locations- MEXICO, BRAZIL, INDIA, CHINA, PERU, JORDAN, ITALY
Example- Country Name: INDIA OUPUT: INDIA- TAJMAHAL
Country Name: USA Output: Sorry not found.
3. The annual examination results of 50 students in a class is tabulated as follows.
Roll No. Subject A Subject B Subject C
---- --- ---- ----
Write a program to read the data, calculate and display the following:
a. Average marks obtained by each student.
b. Print the roll number and average marks of the students whose average mark is above 80.
c. Print the roll number and average marks of the students whose average mark is below 40.
4. Write a java program to input 10 elements in an array and sort them using Bubble sort technique.
5. (i) double area(double a. double b, double e) with three double arguments, returns the
area of a scalene triangle using the formula:
where
(ii) double area(int a, int b, int height) with three integer arguments, returns the area of trapezium
using the formula:
(iii) double area(double diagonal1, double diagonal2) with two double arguments, returns the area
of a rhombus using the formula:

6. Design a class to overload a function polygon() as follows:
(i) void polygon(int n, char ch) : with one integer argument and one character type argument
that draws a filled square of side n using the character stored in ch.
(ii) void polygon(int x, int y) : with two integer arguments that draws a filled rectangle of
length x and breadth y, using the symbol ‘@’
(iii)void polygon( ) : with no argument that draws a filled triangle shown below.
Example:
(i) Input value of n=2, ch=’O’
Output:
OO
OO
(ii) Input value of x=2, y=5
Output:
@@@@@
@@@@@
(iii) Output:
*
**
***
7. Define a class named movieMagic with the following description:
Instance variables/data members:
int year – to store the year of release of a movie
String title – to store the title of the movie.
float rating – to store the popularity rating of the movie.
(minimum rating = 0.0 and maximum rating = 5.0)
Member Methods:
(i) movieMagic() Default constructor to initialize numeric data members to 0 and String data
member to “”.
(ii) void accept() To input and store year, title and rating.
(iii) void display() To display the title of a movie and a message based on the rating as per the
table below.
RATING MESSAGE TO BE DISPLAYED
0.0 to 2.0 Flop
2.1 to 3.4 Semi-hit
3.5 to 4.5 Hit
4.6 to 5.0 Super Hit
Write a main method to create an object of the class and call the above member methods.
8. A special two-digit number is such that when the sum of its digits is added to the product of its
digits, the result is equal to the original two-digit number.

Example: Consider the number 59.
Sum of digits = 5 + 9 = 14
Product of its digits = 5 x 9 = 45
Sum of the sum of digits and product of digits= 14 + 45 = 59
Write a program to accept a two-digit number. Add the sum of its digits to the product of its digits.
If the value is equal to the number input, output the message “Special 2-digit number” otherwise,
output the message “Not a Special 2-digit number”.
9. Using the switch statement. write a menu driven program to calculate the maturity amount of a
Bank Deposit.
The user is given the following options:
(i) Term Deposit
(ii) Recurring Deposit
For option (i) accept principal(P), rare of ¡interest(r) and time period in years(n). Calculate and
output the maturity amount(A) receivable using the formula
For option (ii) accept Monthly Installment (P), rate of interest(r) and time period in months (n).
Calculate and output the maturity amount(A) receivable using the formula
For an incorrect option, an appropriate error message should be displayed.
10. Write a program to input a string and print out the text with the uppercase and lowercase letters
reversed, but all other characters should remain the same as before.
Example:
INPUT: WeLcOmE TO School
OUTPUT: wElCoMe to sCHOOL
11. Design a class name ShowRoom with the following description:
Instance variables/data members:
String name: to store the name of the customer.
long mobno: to store customer’s mobile number.
double cost: to store the cost of the item purchased.
double dis: to store the discount amount.
double amount: to store the amount to be paid after discount.
Methods:
ShowRoom(): default constructor to initialize the data members
void input(): to input customer name, mobile number, cost
void calculate(): to calculate discount on the cost of purchased items, based on the following
criteria

Cost(in Rupees) Discount(In percentage)
Less than or equal to 10000 5 %
More than 10000 and less than or equal to ₹ 20000 10 %
More than 20000 and less than or equal to ₹ 35000 15 %
More than 35000 20%
void display()- To display customer, mobile number, amount to be paid after discount.
Write a main() method to create an object of the class and call the above methods.
12. Write a Java program to print the following pattern using Switch case. Prompt the user to choose
an option between numeric or string pattern.
a. 666666
55555
4444
333
22
1
b. HELLO
HELL
HEL
HE
H

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