Adding deleteCourse method in Administration class

src/main/java/org/example/Administration.java

@@ -30,6 +30,16 @@ public class Administration {
         courses.add(course);
     }
 
+    public boolean deleteCourse(String courseID){
+        for(Course course : courses){
+            if(course.getCourseCode().equals(courseID)){
+                courses.remove(course);
+                return true;
+            }
+        }
+        return false;
+    }
+
     /**
      *
      * @param professorID the id of the professor you want to be deleted from the system