Practical Assignment
Class IX
2022
1.
Write
a Java program to calculate the area of a rectangle. (Area = length * breadth
Given length = 5, and breadth = 4)
2.
Write
a Java program to calculate the volume of a cylinder. (Volume = πr2h
Given r= 5.5, h= 6.5)
3.
Write
a program in Java to find the area, perimeter, and diagonal of a square and display
the output of the program. (Given: side of a square = 25).
4.
Write
a program in Java to input the name and basic salary of an employee. Calculate
and display the gross salary and net salary when: da=
30% of basic
hra= 12.5% of basic
pf= 10% of basic
gross = basic + da + hra
net pay = gross – pf
5.
Write
a program in Java to input two numbers. Display the numbers after swapping them
by using a third variable.
Sample Input: a= 95, b=45
Sample Output:
a=45, b-95
6.
The
time period of a Simple Pendulum is given by the formula: T = 2π 
Write a
program to calculate and display the time period of a Simple Pendulum by taking
length (l) and acceleration due to gravity (g) as inputs. [π=22/7]
7.
Write
a program in Java to calculate and display the value of the given expression: 
Take the value of a, b, and c as inputs.
8.
Write
a Java program to input a number from the user and check and display whether it
is an even number or odd.
9.
Write
a Java program to input a number from the user and check and display whether it
is a BUZZ number or not.
10. In an examination, the grades are awarded to the students in 'Science" according to the average marks obtained in the examination.
|
Marks |
Grades |
|
80% and above |
Distinction |
|
60% or more but less than 80% |
First Division |
|
45% or more but less than 60% |
Second Division |
|
40% or more but less than 45% |
Pass |
|
Less than 40% |
Promotion not granted |
Write a to
input name and marks in Physics, Chemistry and Biology. Calculate the average
marks. Display the name, average marks, and the grade obtained.
11.
A
cloth showroom has announced festival discounts and gifts on the purchase of
items, based on the total cost as given below:
Total Cost Discount Gift
Up to 2,000 5% Calculator
2,001 to 5000 10% School
Bag
5,001 to 10,000 15% Wall
Clock
Above 10,000 20% Wrist
Watch
Write a program to input the total cost. Compute and
display the amount to be paid by the customer along with the gift.
12.
Write
a program to accept two angles. Calculate and display whether they are 'Complementary
Angles' or 'Supplementary Angles' as per the user's choice. [Hint:
Enter 'c' for complementary or 's' for supplementary]
13.
Write
a program to accept the length and breadth of a rectangle. Calculate and display
the area, perimeter or diagonal of the rectangle as per the user's
choice. (Hint use switch case)
14.
Write
a Java program to accept a number from the user and display the ‘factorial’
of the number entered by the user.
15.
Write
a Java program to input a number from the user and check and display whether it
is a ‘Prime number’ or not.
16.
Write
a program to accept a number and check whether it is a ‘Spy Number’
or not. (A number is a spy if the sum of its digits equals the product of its
digits.)
Sample Input: 1124
Sum of the digits=1+1+2+4=8 Product of the digits = 1*1*2*4 = 8
17.
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 digits=59 450
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, then display the message "Special 2-digit number"
otherwise, display the message "Not a special two-digit number".
18.
Write
a program to input a number. Check and display whether it is a ‘Niven
number’ or not. (A number is said to be Niven when it is divisible by
the sum of its digits).
Sample Input: 126 Sum of its digits=1+2+6=9 and 126 is
divisible by 9.
19.
Write
a Java program to display the first ten terms of the ‘Fibonacci series’.
20.
Write
a Java program to display the first ten terms of the series 1, 4, 9, 16, …… .
21.
Write
a program to display the 'Abundant numbers’ from 10 to 100. An
'Abundant' number is a number for which the sum of its proper divisors
(excluding the number itself) is greater than the number itself.
For example: take a number (say, 12)
Factors of 12= 1, 2, 3, 4, 6 Sum of factors= 1+2+3+4+6= 16
Since, 16>12, thus, 12 is an Abundant number. The
first few abundant numbers are 12, 18, 20, 24, 30, 36, 40,
22.
Write
a program in Java to display the given pattern.
1
12
123
1234
12345
23.
Write
a program in Java to display the given pattern.
54321
4321
321
21
1
24.
Write
a program to display the given pattern.
1
10
101
1010
10101
25.
Write
a program in Java to display the given pattern.
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(Note: Practical Assignment questions are also available on https://javaprogramcode.blogspot.com)
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