Core java Assignment questions

Program based upon variables declaration and initialization

1. Create a program to declare and initialize variables for given formulas and also print them.
   1. Circle
      1. area= πr2
      2. perimeter = 2*π*r
   2. Square
      1. area= side * side
      2. perimeter = 4*side
   3. Rectangle
      1. area= length * width
      2. perimeter= 2*(length + width)
   4. Right angle triangle
      1. area= (base*height)/2
      2. perimeter= side1+side2+side3
   5. Volume
      1. Cube
         1. v=a3
      2. Cylinder
         1. v=b*h
      3. Cone
         1. v= b*h/3
      4. Sphere
         1. v=4πr3
2. Swap two number using third variable.
3. Swap two number without using third variable.
4. Find of number of rupees note of 2000, 500, 200 in given amount.
5. Program to calculate simple interest.
6. Check number is even or odd.
7. Check person is eligible for vote or not.
8. Check two number are equal or not.
9. Find out largest number in given two number.
10. Check given year is leap year or not.
11. Check given number is divided by 5 or not.
12. Check given number is divided by 5 or 7.
13. Check given number is divided by 11 and 17.
14. Check two variables are not equal.
15. Display name of days corresponding digit 1-7.
16. Display name of months corresponding digit 1-12.
17. Check student is pass or not in given three subject marks, where passing marks must be greater than 33.
18. Find out grade of student in 10th class.
    • A - where % is greater than 90
    • B - where % is greater than 80
    • C - where % is greater than 70
    • D - where % is greater than or equal 60
    • E - where % is less than 60
19. Calculate addition, subtraction, multiplication and division by selecting choices from 1-4 using switch statement.
20. Check number is even or odd using conditional statement.
21. Find out largest number is given three number.

For loop programs

1. Display numbers for given range.
   1. 1 to 100
   2. 100 to 1
   3. -10 to 10
   4. 10 to -10
   5. -10 to -20
2. Display only even numbers in given range (1-100)
3. Display only odd numbers in given range(32 - 64)
4. Program to count, calculate sum and multiplication in given range(1-7)
5. Check number is prime or not.
6. Find out factorial of given number.
7. Display table of a given number.

while loop programs

1. Display numbers for given range.
   1. 1 to 100
   2. 100 to 1
   3. -10 to 10
   4. 10 to -10
   5. -10 to -20
2. Display only even numbers in given range (1-100)
3. Display only odd numbers in given range(32 - 64)
4. Program to count, calculate sum and multiplication in given range(1-7)
5. Check number is prime or not.
6. Find out factorial of given number.
7. Display table of a given number.
8. Display digits of a given number.
9. Count, calculate sum and multiplication of digits available in given number.
10. Check number is palimdrome number(11, 121, 1221) of not.
11. Check number is armstrong number(1, 153) or not.
12. Check number is special number (1, 145) or not.

do-while loop programs

1. Display numbers for given range.
   1. 1 to 100
   2. 100 to 1
   3. -10 to 10
   4. 10 to -10
   5. -10 to -20
2. Display only even numbers in given range (1-100)
3. Display only odd numbers in given range(32 - 64)
4. Program to count, calculate sum and multiplication in given range(1-7)
5. Check number is prime or not.
6. Find out factorial of given number.
7. Display table of a given number.

Nested loop programs

1. Display all prime numbers from 1 to 100.
2. Display table of numbers from 1 to 10.

Pattern Programs(Nested loop programs)

111
222
333

123
123
123

666
666
666

123
456
789

987
654
321

****
****
****
****

*
**
***
****

****
***
**
*

   *
  **
 ***
****

****
 ***
  **
   *

   *
  ***
 *****
*******

*******
 *****
  ***
   *

Program based upon arrays

1. Store given numbers in an array and print them, 45, 7 , 0, 90, -90, 89, 34, -45, 60
2. Calculate count, sum of given array numbers 45, 7 , 0, 90, -90, 89, 34, -45, 60.
3. Print only even numbers of given array 45, 7 , 0, 90, 91, 41, 80, -90, 89, 34, -45, 60.
4. Print only numbers that are divided by 5 from given array 45, 7 , 0, 90, 91, 41, 80, -90, 89, 34, -45, 60.
5. Print only numbers that are divided by both 5  and 11 from given array 45, 7 , 0, 90, 91, 41, 80, -90, 89, 34, -45, 60.
6. Print only numbers that are special number from given array 45, 7 , 0, 90, 91, 41, 145, 80, -90, 89, 34, -45, 60.
7. Print only numbers that are palimdrome number from given array 45, 7 , 0, 90, 91, 41, 80, -90, 89, 34, -45, 60, 11.
8. Print only numbers that are armstrong number from given array 45, 7 , 0, 90, 91, 41, 1,80, -90, 89, 34, -45, 60, 153.
9. Find position and index of 8 in given array 91, 41, 145, 80, -90,8, 90, 91.
10. Find mode of 10 in given array 45, 7 , 10, 90, 91, 41, 145, 80, 10, 89, 34, -45, 10
11. Find average of numbers given in an array 7 , 0, 90, 91, 41, 145, 80, -90.
12. Store and display given array

    1 0 0
    0 1 0
    0 0 1

13. Store and display given array

    10 20 30 40
    50 60 70 80

14. Display only first row numbers of given array

    1 5 0
    6 1 2
    9 0 8

15. Display only second row numbers of given array
    

    1 5 0
    6 1 2
    9 0 8

16. Display only third row numbers of given array

    1 5 0
    6 1 2
    9 0 8

17. Display only first column numbers of given array
    

    1 5 0
    6 1 2
    9 0 8

18. Display only second column numbers of given array

    1 5 0
    6 1 2
    9 0 8

19. Display only third column numbers of given array

    1 5 0
    6 1 2
    9 0 8

20. Display only left diagonal numbers of given array i.e {1, 1, 8}

    1 5 0
    6 1 2
    9 0 8

21. Display only right diagonal numbers of given array i.e {0, 1, 9}

    1 5 0
    6 1 2
    9 0 8

22. Calculate sum of given two array

    1 5 
    6 1
    
    1 2
    9 0 

23. Subtract first array from second array.

    1 5 
    6 1
    
    1 2
    9 0

24. Transpose given array

    1 2     
    9 0 
    
    1 9
    2 0

Program based upon basic methods.

1. Create a function that displays the user name.
2. Create a function that checks number is even or odd.
3. Create a function that adds prefix '0' on a single-digit number using parameterized function.
4. Create a function that calculates the sum of two numbers using non parameterized function.
5. Create a function that displays a number from 1 to 10 with the help of a while loop.
6. Create a function that returns a greater number.
7. Create a function that return even number for all the given array numbers {1, 45, 5, 6, 68, 90, 102, 0, 90}

Program based upon the class member variable and methods.

1. Create a program where declare a method that contain three local variable named as
   • String username
   • double rate_of_interest
   • double interest

Accept values from the user and store in the given variables and print them.

Note: Call the method without class object.

1. Create a program that has method and calculating to swap two numbers using third variable.
   Note: Call the method using class object.

1. Create a program for given scene.
   • Member variable
     • counter=0
   • Member method
     • increment(): increasing counter value by 100
     • decrement(): decreasing counter value by 50
     • display(): Displaying counter value

1. WAP to calculate simple interest, accept input values in double and calculate with the integer values using type casting.
2. WAP to calculate area of square, circle, triangle, rectangle with the function name "area" using method overloading.
3. WAP for the given scene.
   1. Class Name: Person
   2. Member variable:
      1. String name
      2. int age
      3. String address
      4. String gender
   3. Member methods:
      1. Person(): Constructor to initialize object with the given values.
         1. name=""
         2. age=18
         3. address="almora"
         4. gender="male"
   4. input()
   5. display()
4. WAP to check number is palimdrome or not with the use of Exception handling.