Thread: Need some advice URGENT! thanks!!

hey everyone,
i need to know whats missing to do to be able to
initialise my program such that i can have this possible run

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heres the code:

import java.util.*;
 
public class Resistance {
 
	static Scanner input = new Scanner(System.in).useDelimiter("\r\n");
 
    public static void main(String[] args) {
    	double r1 = 0, r2 = 0, r3 = 0, rTotal = 0, rTotalpara = 0;
        int choice;
        int choice2;
        int loop = 0;
        while(loop < 10)
        {
        System.out.println("          Resistance Calculation            ");
    	System.out.println("          ======================            ");
        System.out.println("1> Resistance in Series  ");
        System.out.println("2> Resistance in Parallel");
        System.out.println("3> Exit                  ");
        System.out.println("=========================");
        System.out.print("Select your choice : ");
        choice = input.nextInt();
 
 
        System.out.println("2> 2 resistances: ");
        System.out.println("3> 3 resistances: ");
        System.out.print("Enter the number of resistance: ");
        choice = input.nextInt();
 
 
       switch (choice)
        {
        	case 2: rTotal = r1 + r2;
        		    System.out.print("Enter the FIRST resistance <ohm> : ");
        	        r1 = input.nextDouble();
        	        System.out.print("Enter the SECOND resistance <ohm> : ");
        	        r2 = input.nextDouble();
        	        System.out.println("----------------------------------------------------------------");
        		    System.out.println("Resultant resistance of the 2 resistors in Series = " + (r1 + r2));
                    break;
 
        	case 3: rTotal = r1 + r2;
        		    System.out.print("Enter the FIRST resistance <ohm> : ");
        	        r1 = input.nextDouble();
        	        System.out.print("Enter the SECOND resistance <ohm> : ");
        	        r2 = input.nextDouble();
        	        System.out.print("Enter the THIRD resistance <ohm> : ");
        	        r3 = input.nextDouble();
        	        System.out.println("----------------------------------------------------------------");
        		    System.out.println("Resultant resistance of the 3 resistors in Series = " + (r1 + r2 + r3));
        			break;
        	case 4: rTotalpara = (r1*r2)/(r1+r2);
        		   System.out.print("Enter the FIRST resistance <ohm> : ");
        	       r1 = input.nextDouble();
        	       System.out.print("Enter the SECOND resistance <ohm> : ");
        	       r2 = input.nextDouble();
        	       System.out.println("----------------------------------------------------------------");
        		   System.out.println("Resultant resistance of the 2 resistors in Parallel = " + ((r1*r2)/(r1+r2)));
                   break;
            case 5: rTotalpara = (r1*r2*r3)/(r2*r3+r1*r3+r1*r2);
        		   System.out.print("Enter the FIRST resistance <ohm> : ");
        	       r1 = input.nextDouble();
        	       System.out.print("Enter the SECOND resistance <ohm> : ");
        	       r2 = input.nextDouble();
        	       System.out.print("Enter the THIRD resistance <ohm> : ");
        	       r3 = input.nextDouble();
        	       System.out.println("----------------------------------------------------------------");
        		   System.out.println("Resultant resistance of the 3 resistors in Parallel = " + ((r1*r2*r3)/(r2*r3+r1*r3+r1*r2)));
        		   break;
 
        	default : System.out.println("Error");
        }System.out.println("");
        loop++;
        }
    }
}