Java 8 Stream findFirst() and findAny()
In Java 8 Stream, the findFirst() returns the first element from a Stream, while findAny() returns any element from a Stream.
Java – How to convert a primitive Array to List
Code snippets to convert a primitive array int to a List. In Java 8, you can use the Stream APIs to do the boxing and conversion. You can’t use the…
Java – How to convert Array to Stream
In Java 8, you can either use Arrays.stream or Stream.of to convert an Array into a Stream. For object arrays, both Arrays.stream and Stream.of returns the same output. For object…
Java – How to declare and initialize an Array
Few Java examples to declare, initialize and manipulate Array in Java: Declares Array for primitive types, Declares array for classes or objects like String.class, Initialize array from method return an…
Java 8 – Convert a Stream to Array
In Java 8, we can use .toArray() to convert a Stream into an Array.
Java 8 – Convert a Stream to List
A Java 8 example to show you how to convert a Stream to a List via Collectors.toList Java8Example1.java Output Yet another example, filter a number 3 and convert it to…
Java 8 – Filter a null value from a Stream
Filter a null value from a Stream by using Stream.filter(x -> x!=null). Alternatively, filter with Objects::nonNull method reference
Java 8 Stream.iterate examples
In Java 8, we can use Stream.iterate to create stream values on demand, so called infinite stream. The stream.iterate was enhanced in Java 9. It supports a predicate (condition) as…
Java Prime Numbers examples
The following 3 Java examples will print a list of all the prime numbers up to 1,000: 1 - Java 8 Stream and BigInteger, 2 - Plain old Java ,…
Java 8 Parallel Streams Examples
Few Java 8 examples to execute streams in parallel: BaseStream.parallel() or Collection.parallelStream() . We can check to see that by default, parallel streams use `ForkJoinPool`. We can use Parallel streams…