ArrayList filter [duplicate]

Answer 1

Probably the best way is to use Guava

List list = new ArrayList();
list.add("How are you");
list.add("How you doing");
list.add("Joe");
list.add("Mike");
    
Collection filtered = Collections2.filter(list,
    Predicates.containsPattern("How"));
print(filtered);

prints

How are you
How you doing

In case you want to get the filtered collection as a list, you can use this (also from Guava):

List filteredList = Lists.newArrayList(Collections2.filter(
    list, Predicates.containsPattern("How")));