Java 11: Converting a Collection to an Array

Fahd ShariffJanuary 15th, 2019Last Updated: January 14th, 2019

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In Java 11, a new default method, toArray(IntFunction), has been added to the java.util.Collection interface, which allows the collection’s elements to be transferred to a newly created array of a desired runtime type.

For example:

// Java 11
List<String> list = Arrays.asList("foo","bar","baz");
String[] array = list.toArray(String[]::new);

// The above is equivalent to:
String[] array2 = list.toArray(new String[0]);

Published on Java Code Geeks with permission by Fahd Shariff, partner at our JCG program. See the original article here: Java 11: Converting a Collection to an Array

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