Question

1) Java code:

A user wants to save for a big purchase. Ask them for the amount they need to save, the current balance in their savings accounts, and the interest rate on the account. Calculate the balance of the account after the first, second, and third year, using the initial balance and annual interest rate. Using simple interest, the value of an account after one year is the balance multiplied by the interest rate plus the balance. Provide output telling the user how many years (1, 2, 3, or more than 3) they will need to wait until they have saved enough for their purchase.

2) Java code:

You and several friends go out for a fancy dinner and want to split the bill. Inputs will be the number of people dining, the total cost of the food, tax rate, and tip percent. The output should be the inputs, the calculated tax, calculated tip, total cost, and how much each person has to pay. Use decision structures to provide two additional messages:

• A comment on the tip percentage the user entered.
• Whether the bill can be evenly split (if everyone pays the displayed amount, will this exactly match the amount you owe)

Answer 1

Java code for Problem 1

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package sat;

import java.util.Scanner;

public class BalanceFind {

   public static void main(String[] args) {
       // TODO Auto-generated method stub
      
       double saving,balance,interestrate;
       double interest;
       int year=0;
       //scanner class object for taking input from keyboard
       Scanner sc = new Scanner(System.in);
      
       System.out.print("Enter amount you want to save: ");
       saving=sc.nextDouble();
      
       System.out.print("Enter balance in your account: ");
       balance=sc.nextDouble();
      
       System.out.print("Enter interest rate on the account: ");
       interestrate=sc.nextDouble();
      
      
       while(balance<=saving)
       {
           balance=balance+(balance*interestrate/100);
           year=year+1;
           System.out.println("Balance after "+year+" year: "+balance);
       }
      
       System.out.println("You need "+year+" to save "+saving);

   }

}

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Output