A bank maintains two types of operations Simple and Interest. Use Class Simple with the following specifications:
Class name: Simple

Data members:

int acno, float balance

Member functions:

Simple(int a, int b): to initialize acno = a, balance = b
void withdraw( ): to maintain the balance with withdrawl (balance - w)
void deposit(int d): to maintain the balance with the deposit (balance + d)

Use Class Interest which inherits with Simple with the following specifications:

Data members:

int r, t; float si, amt;

Member methods:

interest(int x, int y): to initialize r=x, t=y, amt=0
void calculate( ): Find simple interest and amount
                             si = (balance*r*t)/100
                              a = a + si;
void display( ): to print account number, balance, interest and amount.

Write a class program with the following specifications:
Class name: matrix
Data members:

int array m[][] with 3 rows and 3 columns

Member functions;

void getdata( ): to accept the numbers in the array
void rowsum( ): to find and print the sum of the numbers of each row.
void colsum( ): to find and print the sum of numbers of each column.

Use another class to call the functions.

Write a program by using a class with the following specifications:
Class name: salary

Data members:

private int basic

Member functions:

void input( ): to input basic pay
void display( ): to find and print the following-
                        da = 30% of basic, hra = 10% of basic, gross = basic + da + hra

Use main class to operate the functions.

Write a program by using a class with the following specifications:
Class name: factorial

Data members:

private int n

Member functions:

void input( ): to input a number
void fact( ): to find and print factorial of the number.

Use main class to operate the functions.

Write a program by using a class with the following specifications:
Class name: prime
Data members:

private int n

Member functions:

void input( ): to input a number
void prime( ): to check and display the number is prime or not

Use main class to operate the functions. 

Write a class with the following specifications:
Class name: employee

Data members:

String name; float basic;

Member functions:

void getdata( ): to accept name and basic pay

Class salary extends employee

Data members:

float da, hra, gr oss, net

Member functions:

void calculate( ): to find the followings:
                       da = 50% of basic
                      hra = 10% of basic
                   gross = basic + da + hra
                        pf = 8.33% of (basic + da)
                       net = gross - pf
void display( ): to display the payslip

A company pays commission to its salesman on the sale value according to the following rates:

 Model a class program with the following specifications:
Class name: salecom

Data members:

salecom(double s, double c): constructor to initialize sale and com with s and c respectively.
void commission( ): to find the commission
void display( ): to display the commission

Vidyapatib river bridge has a tollbooth. Some cars passing through the bridge stop to play a toll of Rs. 5 are termed as good cars but some run through and do not pay any toll are termed as bad cars. Write a class program with the following specifications:
Class name: tollbooth

Data members:

 private static int ncars, amount

Member functions:

tollbooth( ): constructor to initialize ncars and amount with 0.
void goodcars( ): to increase ncars by 1 and amount by 0.
void badcars( ): to increase only the ncars by 1
void display( ): to print the number of cars passed through the bridge within a defined period and amount collected.

Write a program in Java with the following specifications:
Class name: array

Data members:

Private int a[ ] and b[ ] to contain 10 integers.

Member functions:

void getlist( ): to accept the numbers in both the arrays
int sum(int x, int y): to find and return the sum of corresponding elements.
int max(int x, int y): to find and return maximum of the corresponding elements.
void display( ): to display the sum as well as maximum of the corresponding elements of both the arrays.

Write a program in Java using a class with the following specifications:
Class name: stringopr

Data members:

private String s;

Member functions:

 Stringopr(String x): constructor to initialize string s with x.
int len(string p): to find the length of the string p
int numberofwords( ): to find and display the number of words in the string.

“A number is said to be palindrome if it appears to be the same after reversing the digits”. Write a program by using a class with the following specifications:
Class: number

Data members:

private int num;

Member functions:

number(int x): constructor to initialize num with x;
int reverse(int n): used to return the reverse number
void palindrome( ): to check and print the number is palindrome or not.

Write a class program to design a calculator with the following specifications:
Class name: calculator

Data members/Instant variables:

private int result

Member functions:

calculator( ): constructor to initialize result with zero.
void add(int a): to add a with the result
void sum(int a): to subtract a from the result
void mul( ): to multiply a into the result
void div(int a): to divide result by a
void display( ): to display result
void clear( ): to clear the result

Write a program in Java to find the roots of a quadratic equation ax²+bx+c=0 with the following specifications:
Class name: Quad
Data members:

float a, b, c, d (a, b, c are the co-efficients & d is the discriminant), r1 and r2 are the roots of the equation.

Member methods:

quad(int x, int y, int z): to initialize a=x, b=y, c=z, d=0
void calculate( ): find d=b²-4ac
if d<0 then print “Roots not possible” otherwise find and print:
r1 = (-b + √d)/2a                     and                  r2 = (-b - √d)/2a

The population of a country in a particular year can be calculated by:
p*(1 + r/100) at the end of year 2000, where p is the initial population and r is the growth rate.
Write a Class program in Java to find the population of the country at the end of each year from 2001 to 2007. The Class has the following specifications:
Class name: Population

Data members:

float p, r

Member methods:

Population(int a, int b): Constructor to initialize p and r with a and b respectively.
void print( ): to calculate and print the populations of each year from 2001 to 2007.  

Write a class program in Java with the following specifications:
Class name: Stringop

Data members:

String str

Member functions:

Stringop( ): to initialize str with NULL.
void encode( ): to replace and print each character of the string with second next character in ASCII table.
Example: A with C, B with D and so on………….
void print( ): to print each word of the String in a separate line.

Write a class program in Java with the following specifications:
Data name: Stat
Data members:

int a [ ]: to contain 10 integers
double m: to store the mean of 10 integers
double sd: to store deviation from the mean

Member functions:

stat( ): to initialize array a [int b[ ] ], m, sd
int mean( ): to find the mean of 10 numbers
void dev( ): to print deviation of each number from the mean

d = m – a[ ] 

     Define a class Arrange described as below:

Data members/Instant variables:

Member methods:

Write a class program with the following specifications:
Class name: Calculate

Instant variables:

int num, f, rev

Member methods:

Calculate(int n): to initialize num with n, f and rev with 0 (zero)
int prime( ): to return 1, if number is prime
int reverse( ): to return reverse of the number
void display( ): to check and print, whether the number is prime palindrome or not

Write a class program in Java with the following specifications:
Class name: hcflcm

Data members/Instant variables:

int, a, b

Member functions:

hcflcm(int x, int y): constructor to initialize a=x and b=y.
void calculate( ): to find and print hcf and lcm of both the numbers. 

   Define a class Student described as below:
Data members/Instant variables:
       name, age, m1, m2, (marks in three subjects), maximum, average
Member methods:
i)        A parameterized constructor to initialize the data members
ii)      To accept the details of a student
iii)    To compute the average and the maximum out of three marks
iv)    To display the name, age, and marks in three subjects, maximum and average.
Write a main method to create an object of a class and call the above member methods.