Get List of values from object list

Question

I have a class Person which has the field String name. In another class I have a list of Persons. Is it possible to get a list of the person's names using the Java 8 streaming API?

Answer 1

You can try this, using Stream:

personList.stream().map(p -> p.getName()).collect(Collectors.toList())

Answer 2

From http://docs.oracle.com/javase/tutorial/java/javaOO/lambdaexpressions.html#approach9

yourCollection
.stream().map(p -> p.getName())//here you have stream of names

now all you have to do is convert this stream to list

.collect(Collectors.toList());

So try

List<String> names = yourCollection
                     .stream()
                     .map(p -> p.getName())
                     .collect(Collectors.toList());