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How to generate stream from arrays and collections | Java 8 streams | Streams in Java 8

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Ram N

Posts: 2777
Nickname: ramram
Registered: Jul, 2014

Ram N is Java Programmer
How to generate stream from arrays and collections | Java 8 streams | Streams in Java 8 Posted: Oct 17, 2017 12:49 PM
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This post originated from an RSS feed registered with Java Buzz by Ram N.
Original Post: How to generate stream from arrays and collections | Java 8 streams | Streams in Java 8
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StreamDemo1.java
import java.util.Arrays;
import java.util.stream.Stream;
/**
* Generate Streams from Arrays using .stream or Stream.of.
*/

public class StreamDemo1
{
public static void main(String[] args)
{
String[] strArray = { "Apple", "Ball", "Cat", "Dog", "Eagle" };

// Get Stream using the Arrays.stream
Stream<String> stream1 = Arrays.stream(strArray);
stream1.forEach(x -> System.out.println(x));

System.out.println("---------------------------------");

// Get Stream using the Stream.of
Stream<String> stream2 = Stream.of(strArray);
stream2.forEach(x -> System.out.println(x));
}

}
Output
Apple
Ball
Cat
Dog
Eagle
---------------------------------
Apple
Ball
Cat
Dog
Eagle

StreamDemo2.java
import java.util.ArrayList;
import java.util.List;
/**
* Generate Streams from Collections.
*/

public class StreamDemo2
{
public static void main(String[] args)
{
List<String> itemList = new ArrayList<>();
itemList.add("Apple");
itemList.add("Ball");
itemList.add("Cat");
itemList.add("Dog");

itemList.stream().forEach(item -> System.out.println(item));
}

}
Output
Apple
Ball
Cat
Dog

Click the below link to download the code:
https://sites.google.com/site/ramj2eev1/home/javabasics/StreamDemo_generate_array_collection.zip?attredirects=0&d=1

Github Link:
https://github.com/ramram43210/Java/tree/master/BasicJava/StreamDemo_generate_array_collection

Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/a9fa8aa6476993bce8a79f4d0e8f1799d1d35a7f/BasicJava/StreamDemo_generate_array_collection/?at=master

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