Added oflag

OflagHandler.java

@@ -0,0 +1,28 @@
+import java.util.Scanner;
+
+public class OflagHandler {
+    public static void handleOflag(Scanner UserInput) {
+        System.out.println("Okay, next up please define your oflag. If you have the block-size default, you can choose default here aswell");
+        System.out.println("Available flags: direct (default), dsync, sync, nocache");
+        String oflagHandleInput = UserInput.nextLine();
+
+        String oflagHandleString;
+        switch (oflagHandleInput) {
+            case "1":
+                oflagHandleString = "direct";
+                break;
+            case "2":
+                oflagHandleString = "dsync";
+                break;
+            case "3":
+                oflagHandleString = "sync";
+                break;
+            case "4":
+                oflagHandleString = "nocache";
+                break; 
+            default:
+                oflagHandleString = "direct";
+                break;
+        }
+    }
+}