What is the best way to filter a Java Collection?

Question

I want to filter a java.util.Collection based on a predicate.

Answer 1

How about some plain and straighforward Java

 List list ...;
 List newList = new ArrayList<>();
 for (Customer c : list){
    if (c.getName().equals("dd")) newList.add(c);
 }

Simple, readable and easy (and works in Android!) But if you're using Java 8 you can do it in a sweet one line:

List newList = list.stream().filter(c -> c.getName().equals("dd")).collect(toList());

Note that toList() is statically imported