Java Language
- Getting started with Java Language
- Top 10 Java Errors with Solutions
- Awesome Book
- Awesome Community
- Awesome Course
- Awesome Tutorial
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- 2D Graphics in Java
- Alternative Collections
- Annotations
- Apache Commons Lang
- AppDynamics and TIBCO BusinessWorks Instrumentation for Easy Integration
- Applets
- Arrays
- Asserting
- Atomic Types
- Audio
- Autoboxing
- Basic Control Structures
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- Bit Manipulation
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- C++ Comparison
- Calendar and its Subclasses
- Character encoding
- Choosing Collections
- Class - Java Reflection
- Classes and Objects
- Classloaders
- Collection Factory Methods
- Collections
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- Common Java Pitfalls
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- Concurrent Collections
- Concurrent Programming (Threads)
- Console I/O
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- Converting to and from Strings
- Creating Images Programmatically
- Currency and Money
- Date Class
- Dates and Time (java.time.*)
- Default Methods
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- Documenting Java Code
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- Enum Map
- Enum starting with number
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- EnumSet class
- Exceptions and exception handling
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- Expressions
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- FileUpload to AWS
- Fluent Interface
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- Functional Interfaces
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- InputStreams and OutputStreams
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- Java Pitfalls - Language syntax
- Java Pitfalls - Nulls and NullPointerException
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- JavaBean
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- LocalTime
- log4j / log4j2
- Logging (java.util.logging)
- Maps
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- Nashorn JavaScript engine
- Nested and Inner Classes
- Networking
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- NIO - Networking
- Non-Access Modifiers
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- Object Class Methods and Constructor
- Object Cloning
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- Optional
- Oracle Official Code Standard
- Packages
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- Polymorphism
- Preferences
- Primitive Data Types
- Process
- Properties Class
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- Security & Cryptography
- SecurityManager
- Serialization
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- Sets
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- Splitting a string into fixed length parts
- Stack-Walking API
- Streams
- Collect Elements of a Stream into a Collection
- Collect Results of a Stream into an Array
- Concatenate Streams
- Consuming Streams
- Converting a Stream of Optional to a Stream of Values
- Converting an iterator to a stream
- Create a Map based on a Stream
- Creating a Frequency Map
- Creating a Stream
- Finding Statistics about Numerical Streams
- Finding the First Element that Matches a Predicate
- Flatten Streams with flatMap()
- Generating random Strings using Streams
- Get a Slice of a Stream
- Infinite Streams
- IntStream to String
- Joining a stream to a single String
- Parallel Stream
- Reduction with Streams
- Sort Using Stream
- Stream operations categories
- Streams of Primitives
- Using IntStream to iterate over indexes
- Using Streams
- Using Streams and Method References to Write Self-Documenting Processes
- Using Streams of Map.Entry to Preserve Initial Values after Mapping
- Using Streams to Implement Mathematical Functions
- String Tokenizer
- StringBuffer
- StringBuilder
- Strings
- sun.misc.Unsafe
- super keyword
- The Classpath
- The Java Command - 'java' and 'javaw'
- The java.util.Objects Class
- ThreadLocal
- TreeMap and TreeSet
- Type Conversion
- Unit Testing
- Using Other Scripting Languages in Java
- Using the static keyword
- Using ThreadPoolExecutor in MultiThreaded applications.
- Varargs (Variable Argument)
- Visibility (controlling access to members of a class)
- WeakHashMap
- XJC
- XML Parsing using the JAXP APIs
- XML XPath Evaluation
- XOM - XML Object Model
Java Language Streams
Introduction
A Stream represents a sequence of elements and supports different kind of operations to perform computations upon those elements. With Java 8, Collection interface has two methods to generate a Stream: stream() and parallelStream(). Stream operations are either intermediate or terminal. Intermediate operations return a Stream so multiple intermediate operations can be chained before the Stream is closed. Terminal operations are either void or return a non-stream result.
Syntax
- collection.stream()
- Arrays.stream(array)
- Stream.iterate(firstValue, currentValue -> nextValue)
- Stream.generate(() -> value)
- Stream.of(elementOfT[, elementOfT, ...])
- Stream.empty()
- StreamSupport.stream( iterable.spliterator(), false )
Streams Related Examples
- Collect Elements of a Stream into a Collection
- Collect Results of a Stream into an Array
- Concatenate Streams
- Consuming Streams
- Converting a Stream of Optional to a Stream of Values
- Converting an iterator to a stream
- Create a Map based on a Stream
- Creating a Frequency Map
- Creating a Stream
- Finding Statistics about Numerical Streams
- Finding the First Element that Matches a Predicate
- Flatten Streams with flatMap()
- Generating random Strings using Streams
- Get a Slice of a Stream
- Infinite Streams
- IntStream to String
- Joining a stream to a single String
- Parallel Stream
- Reduction with Streams
- Sort Using Stream
- Stream operations categories
- Streams of Primitives
- Using IntStream to iterate over indexes
- Using Streams
- Using Streams and Method References to Write Self-Documenting Processes
- Using Streams of Map.Entry to Preserve Initial Values after Mapping
- Using Streams to Implement Mathematical Functions
