[Inori]

Since I'm taking it in school this year, I decided to recreate (some of) my python CLI calculator with Java. It doesn't have any fancy features (pi, e, factorials, etc...) but it's good for basics.

Spoiler: Version 1.3.8

Code:

import java.util.Scanner;

public class Calc{
    public static void calc(){
        Scanner in=new Scanner(System.in);
        
        System.out.print("} ");
        String[] eq=in.nextLine().split(" ");

        double a=Double.parseDouble(eq[0]);
        double b=Double.parseDouble(eq[2]);
        
        System.out.print(">>");
        if(eq[1].equals("+")){System.out.println(a+b);}
        else if(eq[1].equals("-")){System.out.println(a-b);}
        else if(eq[1].equals("/")){System.out.println(a/b);}
        else if(eq[1].equals("*")){System.out.println(a*b);}
        else if(eq[1].equals("%")){System.out.println(a%b);}
        else if(eq[1].equals("**")){System.out.println(Math.pow(a,b));}
    }

    public static void main(String[] args){
        for(int i=0;i==i;){
            calc();
        }
    }
}

Spoiler: Version 1.5.3

For this update, I tried my hand at class dependencies and minimizing main method loads. It's still not perfect, but it's a huge improvement.

Main.java

Code:

//main class
public class Main{
    //main method
    public static void main(String[] args){
        //infinite loop, so code runs indefinitely
        while(true){
            //prints formatted, solved equation
            System.out.println(">>"+UI.output());
        }
    }
}

UI.java

Code:

//import scanner for user input
import java.util.Scanner;

//the UI class
public class UI{
    //get user input
    public static String[] getInput(){
        Scanner parse=new Scanner(System.in);
        System.out.print("} ");
        //convert raw input to String array
        String[] eq=parse.nextLine().split(" ");
        //return array
        return eq;
    }
    
    //output solution
    public static double output(){
        //solve
        double solution=Parse.solve(Parse.getValues(getInput()));
        //return solution
        return solution;
    }
}

Parse.java

Code:

//parse class
public class Parse{
    //solution variable
    public static double solve=0.0;
    
    //get values to be equated in double format
    public static Object[] getValues(String[] in){
        Object[] values={Double.parseDouble(in[0]),(String)in[1],Double.parseDouble(in[2])};
        return values;
    }
    
    //determine operator and solve
    public static double solve(Object[] vals){
        double x=(double)vals[0];
        double y=(double)vals[2];
        
        String operator=(String)vals[1];
        switch(operator){
            case "+":
                solve=x+y;
                break;
            case "-":
                solve=x-y;
                break;
            case "*":
                solve=x*y;
                break;
            case "/":
                solve=x/y;
                break;
            case "%":
                solve=x%y;
                break;
            case "**":
                solve=Math.pow(x,y);
                break;
            case "./":
                if(x==2.0){solve=Math.sqrt(y);}
                if(x==3.0){solve=Math.cbrt(y);}
                break;
            default:
                System.out.println("Error: '"+vals[1]+"' is an defined operator.");
        }
        return solve;
    }
}

zipped package(source code, compiled code, bluej package(because why not?), and readme):
[attachment=278]