[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):
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