Java Code with IF else has 8 errors [on hold]

I'm trying to simulate heart function. This code should accept either 0 or 1 for inputs and compare the variables declared, and either return a value or pass to the next function.

import java.util.Scanner;
public class Heart {

        public static void main(String[] args){

            Scanner in = new Scanner(System.in);

            System.out.println("Enter the value of the rightAtrium: ");
            int rightAtrium = in.nextInt();

            System.out.println("Enter the value of the tricuspidValve: ");
            int tricuspidValve = in.nextInt();

            System.out.println("Enter the value of the rightVentricle: ");
            int rightVentricle = in.nextInt();

            System.out.println("Enter the value of the pulmonaryValve: ");
            int pulmonaryValve = in.nextInt();

            System.out.println("Enter the value of the leftAtrium: ");
            int leftAtrium = in.nextInt();

            System.out.println("Enter the value of the mitralValve: ");
            int mitralValve = in.nextInt();

            System.out.println("Enter the value of the leftVentricle: ");
            int leftVentricle = in.nextInt();

            System.out.println("Enter the value of the aorticValve: ");
            int aorticValve = in.nextInt();

            if (rightAtrium == 1 && tricuspidValve ==1){

                //Do nothing

            }else if (tricuspidValve== 0 && rightVentricle==1 && pulmonaryValve==1){

                //Go to the Oxygenation Process

            }else if (leftAtrium== 1 && mitralValve==1){

                //next
            }else if (mitralValve==0 &&leftVentricle== 1 &&aorticValve==1){

                //next: got to systemic circulation
            }


            System.out.println("Still workingon this: ");


        }

}