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Tip: Converting a Java List to an array

Monday Mar 29th 2021 by Octavia Andreea Anghel
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How to convert a Java List to an array.

Converting a Java List an array can be done like this:

Foo[] arr = givenList.toArray(new Foo[0]);

Or, like this:

Foo[] arr = new Foo[givenList.size()];
givenList.toArray(arr); 

Or, in functional style:

Foo[] arr = givenList.stream().toArray(Foo[]::new);

Foo[] arr = givenList.toArray(Foo[]::new);
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