Google's Java Common class library guava

Guava Chinese is pomegranate meaning, the project is a Google Open source project, contains a lot of Google Core Java Common library.

1. Fundamental tools [Basic utilities]

Make it more comfortable to use the Java language

1.1 Using and avoiding null:null is ambiguous and can cause confusing mistakes, sometimes it makes people uncomfortable. Many guava tool classes reject null values with fast failures, rather than blindly accept

1.2 Preconditions: Make the condition check in the method simpler

1.3 Common Object methods: Simplifies object method implementations, such as Hashcode () and ToString ()

1.4 Sort: Guava powerful "fluent style comparator"

1.5 Throwables: Simplifies the propagation and inspection of anomalies and errors

2. Collection [Collections]

Guava extensions to the JDK collection, which is the most mature and known part of guava

2.1 Immutable set: Defensive programming and performance improvement with invariant sets.

2.2 New collection types: multisets, multimaps, tables, bidirectional maps, etc.

2.3 Powerful Collection Tool class: Provides collection tools not available in Java.util.Collections

2.4 Extension Tool classes: making it easier to implement and extend a collection class, such as creating a collection adorner, or implementing an iterator

3. Caching [Caches]

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Guava cache: Locally cached implementation, supports multiple cache expiration policies

4. Functional style [functional idioms]

Guava's functional support can significantly simplify your code, but use it sparingly

5. Concurrent [concurrency]

Powerful and simple abstraction makes it easier to write the right concurrency code

5.1 listenablefuture: Future that triggers the callback upon completion

5.2 Service Framework: An abstraction of open and closed services that help you maintain the state logic of your service

6. String processing [Strings]

Very useful string tools, including segmentation, connection, padding, and other operations

7. Native type [primitives]

The extended JDK does not provide native types such as int, char, and includes some types of unsigned forms

8. Interval [Ranges]

Comparable types of interval APIs, including continuous and discrete types

9. I/O

Simplifies the operation of I/O, especially I/O streams and files, for Java5 and version 6

10. Hash [Hash]

Provides a more complex hash implementation than Object.hashcode () and provides the implementation of the Bloom filter

11. Event bus [Eventbus]

Component communication in publish-subscribe mode, but components do not need to be explicitly registered in other components

12. Mathematical operations [Math]

Optimized, fully tested mathematical tool class

13. Reflection [Reflection]

Guava Java Reflection Mechanism tool class

Specific resources Download Address: http://download.csdn.net/detail/luo201227/7207227