Added Constructor

src/main/java/org/example/Professor.java

@@ -5,4 +5,12 @@ public class Professor {
     private String Name;
     public String role;
 
+    public Professor() {
+    }
+
+    public Professor(String professorID, String name, String role) {
+        this.professorID = professorID;
+        Name = name;
+        this.role = role;
+    }
 }