Main for running the BasicCalculator

gistfile1.txt

package edu.univdhaka.iit.calculator;

import java.math.BigInteger;
import java.util.Scanner;

public class CalculatorMain {

	public static void main(String[] args) {
		
		Scanner input = new Scanner(System.in);
		BasicCalculator calc = new BasicCalculator();
		int choice;
				
		do
		{
			System.out.println("Enter your choice\n1.Add\n2.Subtract\n3.Multiply\n4.Divide\n5.Power\n6.Squareroot\n7.Percentage");
			choice = input.nextInt();
			if(choice==1 || choice==2 ||choice==3 || choice==4)
			 {
				System.out.println("Enter the 1st Number :");
				String X= input.next();
				BigInteger num1 = new BigInteger(X);
			
				System.out.println("Enter the 2nd Number :");
				String Y= input.next();
				BigInteger num2 = new BigInteger(Y);
				switch(choice)
				  {
					case 1 :System.out.println("The sum of the numbers are "+ calc.add(num1, num2));break;
					case 2 : System.out.println("The subtraction of the numbers are "+ calc.subtract(num1, num2));break;
					case 3 :System.out.println("The multiplication of the numbers are "+ calc.multiply(num1, num2));break;
					case 4 :System.out.println("The division of the numbers are "+ calc.divide(num1, num2));break;
					
				  }
			 }
					 
			switch(choice)
			{
				    case 5 :
					System.out.println("Enter the Number :");
				    String x= input.next();
				    BigInteger num3 = new BigInteger(x);
				    System.out.println("Given Number to the power :");
				    int num4= input.nextInt();
					System.out.println("The exponent of the number is "+ calc.exponent(num3,num4));break; 
				case 6 :
					   
					System.out.println("Enter the number");
				    double i= input.nextDouble();
				    System.out.println("The sqrt is "+ calc.squareroot(i));
					
			    case 7:System.out.println("Enter the number");
			    		int y=input.nextInt();
			    		System.out.println("Number's % ?");
			    		int z=input.nextInt();
			    		System.out.println("The percentage of the number is "+ calc.percentage(y, z));break;
					
			}
		System.out.println("Want to do more calculation ?press 8 for No and 9 for yes");
		choice = input.nextInt();
		}while(choice!=8);
	

	}

}

switch was used twice bcz it showed error if i relate it with other cases i.e 1-4 with 5-7