Writing body of AlgorithmTester and RandomNumberFileMaker

Sorting/AlgorithmTester.java

@@ -1,5 +1,7 @@
 package Sorting;
 
+import java.util.Scanner;
+import java.util.InputMismatchException;
 /**
  * This class contains the main method and presents an interface for the user to
  * compare sorting algorithm efficiencies. The user will be able to generate files
@@ -8,8 +10,32 @@ package Sorting;
  */
 public class AlgorithmTester{
 
+    final static Scanner sc = new Scanner(System.in);
+    static int input;
     public static void main(String[] args) {
-        
+        System.out.println("SORTING ALGORITHM TESTER\n");
+        boolean quit = false;
+        while(!quit){
+            System.out.println("Please select an option:");
+            System.out.println("1) Make a file of random numbers");
+            System.out.println("2) Sort a file of random numbers");
+            System.out.println("0) Exit")
+       
+            try{
+                input = sc.nextInt();
+         //Using the new switch syntax introduced in JDK 13
+        //this is a switch expression (lambda expression) rather than a switch statement
+                switch(input){
+                    case 1 -> makeFile();
+                    case 2 -> sortFile();
+                    case 3 -> quit=true;
+                }
+
+            } catch(InputMismatchException ex){
+                System.out.println("Invalid input");
+            }
+        }
+        sc.close();
     }
 
 }