help with java assignments for class?

I am having trouble figuring out why java is giving me an error for the symbols. I will post the errors below the code.

Java Code:

import java.util.Scanner;


public class ShelbyHarms_3_02 {
   public static void main(String[] args) {
       Scanner console = new Scanner(System.in);
       
       double s = 0; //Semi-Perimeter
       double x = 0; // Perimeter of triangle
       double area = 0; //Area of triangle
       double a, b, c = 0; //Input sides of triangle
       
       //Input lengths of triangle
       System.out.print("Please enter triangle side a: ");
       a = console.nextDouble();
       
       System.out.print("Please enter triangle side b: ");
       b = console.nextDouble();
       
       System.out.print("Please enter triangle side c: ");
       c = console.nextDouble();
       
    }
       
       //Calculations for area and perimeter         
    public static double triangleArea (double a, double b, double c) {
       s = (a + b + c)/2.0;
       x = ((s) * (s-a) * (s-b) * (s-c));
       area = Math.sqrt(x); 
      
      return area;     
       
       //Output the results
       System.out.println("Your three triangle lengths are: " + '\n' + a +
           '\n' + b + '\n' + c);
       System.out.println("The area of your triangle is: " +
           triangleArea(a, b, c));
          
    } // End main()
} // End class

My errors are:

ShelbyHarms_3_02.java:38: error: cannot find symbol



s = (a + b + c)/2.0;



^



symbol: variable s



location: class ShelbyHarms_3_02



ShelbyHarms_3_02.java:39: error: cannot find symbol



x = ((s) * (s-a) * (s-b) * (s-c));



^



symbol: variable x



location: class ShelbyHarms_3_02



ShelbyHarms_3_02.java:39: error: cannot find symbol



x = ((s) * (s-a) * (s-b) * (s-c));



^



symbol: variable s



location: class ShelbyHarms_3_02



ShelbyHarms_3_02.java:39: error: illegal start of type



x = ((s) * (s-a) * (s-b) * (s-c));



^



ShelbyHarms_3_02.java:39: error: cannot find symbol



x = ((s) * (s-a) * (s-b) * (s-c));



^



symbol: variable s



location: class ShelbyHarms_3_02



ShelbyHarms_3_02.java:39: error: cannot find symbol



x = ((s) * (s-a) * (s-b) * (s-c));



^



symbol: variable s



location: class ShelbyHarms_3_02



ShelbyHarms_3_02.java:39: error: cannot find symbol



x = ((s) * (s-a) * (s-b) * (s-c));



^



symbol: variable s



location: class ShelbyHarms_3_02



ShelbyHarms_3_02.java:40: error: cannot find symbol



area = Math.sqrt(x);



^



symbol: variable area



location: class ShelbyHarms_3_02



ShelbyHarms_3_02.java:40: error: cannot find symbol



area = Math.sqrt(x);



^



symbol: variable x



location: class ShelbyHarms_3_02



ShelbyHarms_3_02.java:42: error: cannot find symbol



return area;



^



symbol: variable area



location: class ShelbyHarms_3_02



10 errors