Final version

Application.java

@@ -0,0 +1,92 @@
+public class Application {
+
+    public Application() {
+
+    }
+
+    public static void main(String[] args) {
+        run();
+    }
+
+    public static void run() {
+        IOConsole console = new IOConsole();
+        Processor processor = new Processor();
+        String result = "";
+        String numConvert = "";
+
+
+        boolean quit = false;
+        // Hello 
+        console.println("Hi!");
+        while(!quit) {
+
+            // String input = console.getStringInput("Would you like to change the display?");
+            // if (input.matches("yes")){
+            //     String viewDisplayinput = console.getStringInput("Would you like to view display options"); 
+            //     if(viewDisplayinput.matches("yes")) {
+            //         processor.displayMode("display");
+            //     } else {
+            //         String mode = console.getStringInput("Enter Mode:");
+            //         processor.displayMode(mode);
+            //         Integer x = console.getIntegerInput("Enter x");
+            //         numConvert = processor.changeMode(mode, x);
+            //         console.println(numConvert);
+            //         // enter y
+            //         Integer y = console.getIntegerInput("Enter y");
+            //         numConvert = processor.changeMode(mode, y);
+            //         console.println(numConvert);
+            //     }
+            // }
+
+
+            // enter operator
+            String operator = console.getStringInput("Enter operator");
+
+            boolean isValid = isValid(operator);
+            if(!isValid) {
+                run();
+            } else {
+                if(operator.matches("inverse|square|invert|!|sqrt|sin|asin|cos|acos|tan|atan|")){
+                Double x = console.getDoubleInput("Enter x");
+                result = processor.arithmetic(operator, x, 0.0);    
+            } else {
+                // enter x
+                Double x = console.getDoubleInput("Enter x");
+                // enter y
+                Double y = console.getDoubleInput("Enter y");
+                result = processor.arithmetic(operator, x, y);
+            }
+
+        }
+        // print result
+            console.println(result);
+
+            console.println("Would you like to do more Math????");
+            console.println("Enter: yes to continue.");
+            String redo = console.getStringInput("Enter: no to quit.");
+
+            // More math?
+            if(redo.equals("no")) {
+                quit = true;
+            } else {
+                console.clearScreen();
+                quit = false;
+            }
+
+
+        }
+        // bye!
+    }
+    public static boolean  isValid(String operation) {
+        String[] operations = {"-", "/", "*", "^", "+" , "inverse" , "square" ,  "invert" ,  "!" , "sqrt",  "sin" , "asin" , "cos" ,  "acos" , "tan" , "atan"};
+        for(int i= 0; i < operations.length-1; i++) {
+            if(operations[i].equals(operation)) {
+                return true;
+            } 
+        }
+        return false;
+    }
+
+
+}
+

ApplicationTest.java

@@ -0,0 +1,42 @@
+
+
+import static org.junit.Assert.*;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+/**
+ * The test class ApplicationTest.
+ *
+ * @author  (your name)
+ * @version (a version number or a date)
+ */
+public class ApplicationTest
+{
+    /**
+     * Default constructor for test class ApplicationTest
+     */
+    public ApplicationTest()
+    {
+    }
+
+    /**
+     * Sets up the test fixture.
+     *
+     * Called before every test case method.
+     */
+    @Before
+    public void setUp()
+    {
+    }
+
+    /**
+     * Tears down the test fixture.
+     *
+     * Called after every test case method.
+     */
+    @After
+    public void tearDown()
+    {
+    }
+}

Calculator.java

@@ -0,0 +1,166 @@
+
+/**
+ * Write a description of class Calculator here.
+ *
+ * @author (your name)
+ * @version (a version number or a date)
+ */
+
+import  java.lang.Math;
+
+public class Calculator
+{
+    // instance variables - replace the example below with your own
+    private Double x;
+
+    /**
+     * Constructor for objects of class Calculator
+     */
+    public Calculator()
+    {
+        // initialise instance variables
+        x = 0.0;
+    }
+
+
+    /**
+     * TODO Write comments
+     */
+    public Double squareMethod(Double x)
+    {
+        // put your code here
+        return x * x;
+
+    }
+
+    public Double add(Double x,Double y)
+    {
+        return (x+y);
+    }
+
+    public Double sub(Double x,Double y)
+    { 
+        return x - y;
+    }
+
+    public Double multiply(Double x,Double y)
+    {
+        return (x*y);
+    }
+
+    public Double div(Double x,Double y)
+    {
+        return (Double)(x/y);
+    }
+    public Double squareRootMethod(Double x)
+    {
+        // put your code here
+        return Math.sqrt(x);
+
+    }
+
+    public Double invertMethod(Double x)
+    {
+        // put your code here
+        x=-x;
+        return x;
+
+    }
+    public Double exponentiationMethod(Double x,Double y)
+    {
+        // put your code here
+        return Math.pow(x,y);
+
+    }
+
+    public Double inverseMethod(Double x)
+    {
+        // put your code here
+        return 1/(Double)x;
+
+    }
+
+    public Double sineMathMethod(Double x)
+    {
+       Double radians = Math.toRadians(x);
+
+
+      return  (Math.sin(radians));
+
+    }
+
+    public Double cosMathMethod(Double x)
+
+   {
+        Double radians = Math.toRadians(x);
+        // put your code here
+        return (Math.cos(radians));
+
+    }
+
+    public Double tanMathMethod(Double x)
+    {
+        Double radians = Math.toRadians(x);
+        // put your code here
+        return (Math.tan(radians));
+
+    }
+    public Double invSineMathMethod(Double x)
+    {
+       //Double radians = Math.toRadians(x);
+
+       return (Math.asin(x));
+
+    }
+
+    public Double invCosMathMethod(Double x)
+    {
+        Double radians = Math.toRadians(x);
+        // put your code here
+        return (Math.acos(radians));
+
+    }
+
+    public Double invTanMathMethod(Double x)
+    {
+        //Double radians = Math.toRadians(x);
+        // put your code here
+        return (Math.atan(x));
+
+    }
+
+    public long factorialMethod(Double x){
+
+        long result = 1;
+
+        for (int factor = 2; factor <= x; factor++) {
+            result *= factor;
+        }
+
+        return result;
+    }
+
+    public String toBinary(int x)
+    {
+        String binary =Integer.toBinaryString( x );
+        return binary;
+    }
+
+    public String toOctal(int x)
+    {
+        String octal =Integer.toOctalString( x );
+        return octal;
+    }
+
+    /*public String tofloat (int x)
+    {
+        String fl =Integer.floatValue( x );
+        return fl;
+    }
+*/    
+    public String toHexadecimal(int x)
+    {
+        String hexa =Integer.toHexString( x );
+        return hexa;
+    }
+}