added afew changes

Console.java

- 
 
 import java.util.Scanner;
-
 /**
  * Created by leon on 2/9/18.
  */
     public static void println(String output, Object... args) {
         print(output + "\n", args);
     }
+
     public static void printResult(Double result) {
-        System.out.println(result);
+        System.out.println("Result = " + result);
     }
 
     public static String getStringInput(String prompt) {
     }
 
     public static Integer getIntegerInput(String prompt) {
-        Scanner scanner = new Scanner(System.in);
+        Scanner scanner_1 = new Scanner(System.in);
         println(prompt);
-        Integer userInput = scanner.nextInt();
-        return userInput;
+        Integer firstNumber = scanner_1.nextInt();
+        return firstNumber;
     }
 
     public static Double getDoubleInput(String prompt) {
         Double userInput = scanner.nextDouble();
         return userInput;
     }
+
+    //public static Double getNumberForUniOperators(){
+        
+
+   // }
 }

Operations.java

 
         Scanner input = new Scanner(System.in);
         Double result = 0.0;
-        double firstNumber = 0.0;
-        double SecondNumber =0.0;
         //String userInput = scanner.nextLine();
         scienticFunctions ScientificFunctions = new scienticFunctions();
         // Calculator calc = new ....
                 break;
             }
             if (command.equalsIgnoreCase("sine"))  {
-                // read first number
-                System.out.print("Enter a number: ");
-                firstNumber = input.nextDouble();
-                // read second number
-                //double secondNumber = input.nextDouble();
-                // call the add method on calc and display
-                result  = ScientificFunctions.sine(firstNumber);
-                //firstNumber = result;
-                //result = firstNumber;
+                result = ScientificFunctions.sine(Console.getDoubleInput("Enter number"));
                 Console.printResult(result);
             }
             if (command.equalsIgnoreCase("cos"))  {
-                // read first number
-                firstNumber = input.nextDouble();
-                // call the cosine method on calc and display
-                result  = ScientificFunctions.cos(firstNumber);
+                result = ScientificFunctions.cosine(Console.getDoubleInput("Enter number"));
                 Console.printResult(result);
             }
             if (command.equalsIgnoreCase("tan"))  {
-            // call the square method on calc and display
-                firstNumber = input.nextDouble();
-                result = ScientificFunctions.tangent(firstNumber);
+                result = ScientificFunctions.tangent(Console.getDoubleInput("Enter number"));
                 Console.printResult(result);
             }
             if (command.equalsIgnoreCase("cos-1"))  {
-            // call the square method on calc and display
-                firstNumber = input.nextDouble();
-                result = ScientificFunctions.inverseCosine(firstNumber);
+                result = ScientificFunctions.inverseCosine(Console.getDoubleInput("Enter number"));
                 Console.printResult(result);
             }
             if (command.equalsIgnoreCase("sin-1"))  {
-            // call the square method on calc and display
-                firstNumber = input.nextDouble();
-                result = ScientificFunctions.inverseSine(firstNumber);
+                result = ScientificFunctions.inverseSine(Console.getDoubleInput("Enter number"));
                 Console.printResult(result);
             }
             if (command.equalsIgnoreCase("tan-1"))  {
-            // call the square method on calc and display
-                firstNumber = input.nextDouble();
-                result = ScientificFunctions.inverseTangent(firstNumber);
+                result = ScientificFunctions.inverseTangent(Console.getDoubleInput("Enter number"));
                 Console.printResult(result);
             }
-            firstNumber = result;
+            //firstNumber = result;
             // and on and on
         }
 

__SHELL5.java

-
-public class __SHELL5 extends bluej.runtime.Shell {
-public static void run() throws Throwable {
-
-java.lang.String[] __bluej_param0 = { };
-MainApplication.main(__bluej_param0);
-
-}}

scienticFunctions.java

      * @param  y  a sample parameter for a method
      * @return    the cosine of y
      */
-    public double cosine(double y)
-    {
-        double x = Math.toRadians(y);
-
-        return Math.cos(x);
-    }
+    
 
     /**
      * A method - find the sine of a given number by converting it to radians
         return Math.sin(Math.toRadians(y));
     }
     
-    public static double cos(double y){
+    public static double cosine(double y){
         return Math.cos(Math.toRadians(y));
     }