Question

Define a class Interest having the following description:

Class name: Interest
Data members:
int p: to store principal (sum)
int r: to store rate
int t: to store time
double interest: to store the interest to be paid
double amt: to store the amount to be paid
Member methods:
void input(): Stores the principal, rate, time
void cal(): Calculates the interest and amount to be paid
void display(): Displays the principal, interest and amount to be paid

Write a program to compute the interest according to the given conditions and display the output.

Time	Rate of interest
For 1 year	6.5%
For 2 years	7.5%
For 3 years	8.5%
For 4 years or more	9.5%

(Note: Time to be taken only in whole years)

Answer 1

import java.util.*;
class Interest 
{int p, t; 
double r, interest, amt; 

void input()
{Scanner ob = new Scanner(System.in); 
System.out.println("Enter the principal"); 
p = ob.nextlnt();  
System.out.println("Enter the time"); 
t = ob.nextlnt(); 
} 

void cal() 
{if. (t == 1) r = 6.5; 
else if (t == 2) r = 7.5; 
else if (t == 3) r = 8.5; 
else if (t >= 4) r = 9.5; 
interest = (p * r * t) / 100; 
amt = p + interest; 
}

void display() 
{System.out.println("Principal:Rs. " + p); 
System.out.println("Interest: Rs. " + interest); 
System.out.println("Amount: Rs. " + amt); 
}

public static void main(String args[]) 
{Interest in = new Interest(); 
in.input(); 
in.cal(); 
in.display(); 
} 
}