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New Features in Java 8

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Introduction

About This Module

Taste of lambdas

Writing your first lambda Java Comparator Using Lambda Predicate Functional Interface Supplier Functional Interface Consumer Functional Interface Function Interface Unary Operator Binary operator Capturing lambdas

Stream API

Filtering Operations in Stream

Mapping Operations in Stream

Method References

Optional in Java 8: Part 1

Optional in Java 8: Part 2

Slicing Operations in Stream

Matching Operations in Stream.

Finding Operations in Stream

Mutable Reduction Through reduce()

Collectors: Collection Operations.

Collectors: Aggregation Operations

Collectors: Grouping Operations

Parallel Stream

Lazy Evaluation in Streams

Java 8 Concurrency API Improvements

CompletableFuture: Introduction CompletableFuture: Processing Results CompletableFuture: Chaining CompletableFuture: Combining Results of Futures StampedLock

Java Time API

Limitations of Old Date/Time API LocalDate LocalTime LocalDateTime ZonedDateTime Period and Duration

The Way Forward

Where to Go From Here

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Parallel Stream

Parallel Stream

This lesson introduces parallel streams, which are used to process the stream elements in parallel.

Until now, we have only been looking at serial Stream. However, Java 8 introduced the concepts of the parallel stream and parallel processing. As we have a greater number of CPU cores nowadays, due to cheap hardware costs, parallel processing can be used to perform operation faster.

Creating a parallel stream

There are two ways in which we can create a parallel Stream:

Using the parallelStream() method.
Or, if we already have a stream, we can use the parallel() method to

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