Change over to Intellij

using older version of switch

src/com/company/Main.java

@@ -3,10 +3,11 @@ package com.company;
 import java.util.Scanner;
 
 public class Main {
+    @SuppressWarnings("InfiniteLoopStatement")
     public static void main(String[] args)
     {
-        Scanner in = new Scanner(System.in);
-        while (true) {
+        while(true) {
+            Scanner in = new Scanner(System.in);
             print("Enter first number: ");
             String num1 = in.nextLine();
             print("please enter second number");
@@ -17,27 +18,23 @@ public class Main {
             String op = in.nextLine();
 
             switch (op) {
-                case "+": {
+                case "+" -> {
                     int total = add(num1, num2);
                     System.out.println(total);
                 }
-                case "-": {
+                case "-" -> {
                     int total = sub(num1, num2);
                     System.out.println(total);
                 }
-                case "x": {
+                case "*", "x" -> {
                     int total = mul(num1, num2);
                     System.out.println(total);
                 }
-                case "*": {
-                    int total = mul(num1, num2);
-                    System.out.println(total);
-                }
-                case "/": {
+                case "/" -> {
                     int total = div(num1, num2);
                     System.out.println(total);
                 }
-                default: print("Unexpected value: " + op + " ...restarting program");
+                default -> print("Unexpected value: " + op + " ...restarting program");
             }
         }
     }