Java 8: Stream forEach

With Java 8 you can use forEach to iterate a Stream.

Given the following ArrayList

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List<String> colors = new ArrayList<String>();
colors.add("red");
colors.add("green");
colors.add("blue");

Create a new Stream using the ArrayList.

Create Stream

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Stream<String> colorStream = colors.stream();

Now simply call forEach on your Stream and supply either a Method Reference or a Lambda.

Method Reference

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colorStream.forEach(System.out::println);

or

Lambda

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colorStream.forEach(e -> System.out.println(e));

Both examples print the same output to the console using System.out.println

Console Output

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red
green
blue