Question

In Java, what’s the qucikest way to convert an array to a List or a set?

String[] a = {"Test1", "test2"};

List<String> l = new ArrayList<String>();

Answer 1

Use the java.util.Arrays class.

List<String> list = Arrays.asList(new String[] {"a", "b"});

Note that the implementation of List you get by the above method isn’t the same as java.util.ArrayList. If you want ArrayList implementation, use

List<String> list = new ArrayList<String>(Arrays.asList(new String[] {"a", "b"}));