A new day, a new idea! Any smart IDE can show us the road ahead. For example, the NetBeans IDE will discretely warn us that this anonymous class can be written as a lambda expression.

This is shown in the following screenshot:

The message is crystal clear – This anonymous inner class creation can be turned into a lambda expression. Here, make the transformation by hand or let the IDE do it for us.

The result will look like this:

List<Melon> europeansLambda = Filters.filterMelons(
  melons, m -> "europe".equalsIgnoreCase(m.getOrigin()));

This is much better! Java 8 lambda expressions did a great job this time. Now, we can write Mark's filters in a more flexible, fast, clean, readable, and maintainable manner.