Primitive type Stream example.

In java collection framework works with objects, not with primitive types. In order to use primitive with collections, we need to depend on wrapper classes. In Java 8 Stream, we don't need to worry about handling primitive data. Java 8 Stream API provides below Interfaces to support primitive type in Stream.

IntStream is a sequence of primitive int-valued elements supporting sequential and parallel aggregate operations. This is the int primitive specialization of Stream.

LongStream is a sequence of primitive long-valued elements supporting sequential and parallel aggregate operations. This is the long primitive specialization of Stream.

DoubleStream is a sequence of primitive double-valued elements supporting sequential and parallel aggregate operations. This is the double primitive specialization of Stream.

package com.java2novice.streams;

import java.util.Arrays;
import java.util.stream.DoubleStream;
import java.util.stream.IntStream;

public class PrimitiveStreamEx {

	public static void main(String a[]) {

		IntStream inStrm = IntStream.of(10, 20, 30, 40);
		System.out.println("----- IntStream -----");
		inStrm.forEach(System.out::println);

		double[] results = {98.12, 72.17, 75.20, 68.6};
		DoubleStream resultStream = Arrays.stream(results);
		System.out.println("----- DoubleStream -----");
		resultStream.forEach(System.out::println);
	}
}

Java 8 Streams Examples

1. How Java 8 Streams work?
2. Java 8 Streams parallelism introduction.
3. Explain non-interference behavior of Java 8 Streams.
4. Create Java 8 Stream using Stream.of() method example.
5. Create Java 8 Stream using List example.
6. Create Java 8 Stream using Stream.generate() method.
7. Java 8 Stream.filter() example.
8. Java 8 Stream.map() example.
9. Java 8 Stream flatmap method example.
10. Java 8 Stream peek method example.
11. Java 8 Stream distinct method example.
12. Java 8 Stream sorted method example.
13. Java 8 Stream limit method example.
14. Java 8 Stream forEach method example.
15. Java 8 Stream toArray method example.
16. Java 8 Stream reduce method example.
17. Java 8 Stream collect method example.
18. Java 8 Stream concat method example.
19. Java 8 Stream anyMatch(), allMatch() and noneMatch() example.
20. Java 8 Stream findFirst(), findAny() example.
21. Primitive type Stream example.