Java streams 9. Create numeric stream using range()

There are two versions of the range() method: 
— range(int startInclusive, int endExclusive)
— rangeClosed(int startInclusive, int endInclusive)
Their usage is pretty straightforward:

  
  IntStream intStream1 = IntStream.range(3, 7);
  intStream1.forEach(System.out::print);  //prints: 3456

  IntStream intStream2 = IntStream.rangeClosed(3, 7);
  intStream2.forEach(System.out::print);  //prints: 34567

  LongStream longStream1 = LongStream.range(3, 7);
  longStream1.forEach(System.out::print);  //prints: 3456
  
  LongStream longStream2 = LongStream.rangeClosed(3, 7);
  longStream2.forEach(System.out::print);  //prints: 34567
     

As you can see, these methods create streams that emit sequential values starting with startInclusive. The difference between the methods is that rangeClosed() creates a stream that also emits the endInclusive value.

In the next post, we will talk about creating a numeric stream using methods 
— Stream<String> Files.lines(Path path)
— Stream<String> Files.lines(Path path, Charset cs)
— Stream<Path> Files.list(Path dir)
— Stream<Path> walk(Path start, FileVisitOption… options)
— Stream<Path> walk(Path start, int maxDepth, FileVisitOption… options)

See other posts on Java 8 streams and posts on other topics.
You can also use navigation pages for Java stream related blogs:
— Java 8 streams blog titles
— Create stream
— Stream operations
— Stream operation collect()
The source code of all the code examples is here in GitHub.