Java Streams Java Streams Tutorial

Introduction

• What Is a Stream
• Streams Features
• Internal Iteration vs. External Iteration
• Sequential vs Parallel
• Imperative vs. Functional
• Intermediate operations Terminal operations
• Ordered Streams vs. unordered Streams
• Streams API Architecture
• BaseStream
• Stream

Create

• Creating Streams
• Create Streams from Values
• Stream Builder
• IntStream from range
• Empty Streams
• Streams from Functions
• Stream.iterate()
• Stream.generate()
• Stream Random
• Streams from Arrays
• Streams from Collections
• Streams from Files
• Streams from Char Sequence
• Streams from Regex

Optional

• Optional
• Create Optional Object
• Optional ifPresent
• Optional Value
• Stream Optional Value

Operation

• Streams Operations
• Streams Peek
• Streams ForEach
• Streams Map
• Streams flatMap
• Streams Filter
• Streams Reduce
• Map Reduce in parallel
• Streams Reduce without default value
• Numeric Stream Aggregation
• Streams Count

Group

• Collect with Collectors
• Collector interface
• Summary Statistics
• Streams summary statistics
• Numeric Stream summary statistics
• Collect Data to Map
• Join Strings with Collectors
• Grouping Data
• Partitioning Data
• Convert Collector Results

Find

• Streams Find
• Streams Match

Parallel

• Parallel Streams