ZCW-MacroLabs-OOP-ScientificCalculator/Operations.java

/**
 * Write a description of class Operations here.
 *
 * @author (your name)
 * @version (a version number or a date)
 */
import java.util.Scanner;
public class Operations
{
    Scanner scan = new Scanner(System.in);
    
    protected static boolean isError = false;
    
    protected static double currentNumber;
    
    protected double numInMemory;
    
    protected double firstNumber;
    
    protected double secondNumber;

    /**
     * Constructor for objects of class Operations
     */
    public Operations()
    {
        // initialise instance variables
    }
    
    public double getCurrentNumber() {
        return currentNumber;
    }
    
    public  void display() {
        System.out.println(currentNumber);
    }
    
    public  void update(double z) {
        System.out.println(z);
        currentNumber = z;
    }
    
    public  void clear() {
        currentNumber = 0;
        System.out.println(currentNumber);
        isError = false;
    }
    
    public  void remember() {
        numInMemory = currentNumber;
        System.out.println("Stored : " + numInMemory);
    }
    
    public  void recall() {
        System.out.println("Stored value: " + numInMemory);
        currentNumber = numInMemory;
    }
    
    public  void invertSign() {
        if (currentNumber == 0) {
            currentNumber = 0;
            update(currentNumber);
        } else if (currentNumber > 0){
            currentNumber -= (2 * currentNumber);
            update(currentNumber);
        } else {
            currentNumber += (-2 * currentNumber);
            update(currentNumber);
        }
    }
    
    public  void addToNumInMemory() {
        numInMemory += currentNumber;
        System.out.println("Stored value: " + numInMemory);
    }
    
    public void switchDisplayMode() {
        System.out.print("Binary : 'Y' or 'N'");
        String choice = scan.next();
        if (choice.equalsIgnoreCase("Y")) {
            int binary = (int)currentNumber;
            System.out.println(Integer.toBinaryString(binary));
        } else if (choice.equalsIgnoreCase("N")) {
            System.out.println("Octal: 'Y' or 'N'");
            choice = scan.next();
            if (choice.equalsIgnoreCase("Y")) {
                
            } else if (choice.equalsIgnoreCase("N")) {
                System.out.println("Decimal: 'Y'or 'N'");
                choice = scan.next();
                if (choice.equalsIgnoreCase("Y")) {
                    
                } else if (choice.equalsIgnoreCase("N")) {
                    System.out.println("Hexadecimal: 'Y' or 'N'");
                    choice = scan.next();
                    if (choice.equalsIgnoreCase("Y")) {
                        
                    } else if (choice.equalsIgnoreCase("N")) {
                        System.out.println(currentNumber);
                    }
                }
            }
        }
    }
    
    public void switchUnitsMode() {
        System.out.print("Degrees : 'Y' or 'N'");
        String choice = scan.next();
        if (choice.equalsIgnoreCase("Y")) {
            double degree = Math.toDegrees(currentNumber);
            double regular = currentNumber;
            update(degree);
        } else if (choice.equalsIgnoreCase("N")) {
            System.out.println("Radians: 'Y' or 'N'");
            choice = scan.next();
            if (choice.equalsIgnoreCase("Y")) {
                double radians = Math.toRadians(currentNumber);
                double regular = currentNumber;
                update(radians);
            } else if (choice.equalsIgnoreCase("N")) {
                System.out.print(currentNumber);
            }
    }
}

}