Demonian / Java-EX

Java Common Extension

Java-EX

Java Common Extension

Get it

To add a dependency on Java-EX using Maven, use the following:

<dependency>
    <groupId>com.github.XDean</groupId>
    <artifactId>Java-EX</artifactId>
    <version>0.0.7</version>
</dependency>

Features

Lang

• Finalize support. Attach clean up tasks on any object. Free from Object.finalize.
• Size of object. Measure shallow and retained size of object or class by java code which is useful when debug.

Reflect

• Add or change annotations on Class/Method/Field at runtime.
• Get explicit generic type of class or interface.
• Get caller (any depth in stack) information
• Get more information of class: getAll(Field/Method/Interface/SuperClass)s, getRoot(Field/Method)

Collection

• Either. Left or right, that is a question.
• Pair. Left and right, that is no question.
• IntList. Operate int array easier. (not java.util.List)
• TreeNode. A powerful tree implementation. (not dependable yet)
• Traverse. Traverse any tree structure. Provide default PreOrder/PostOrder/BreadthFirst traverser.

Easy Programming / Function Programming

• Functions with throws.
• Ignore checked exception by uncheck.
• Change throw exception to return it.
• Cache everywhere like dynamic field.
• Let everything lambda and let lambda one line:
  • Try
  • If
  • TaskUtil

RxJava Extension

• From java functions to Rx functions.
• Use RxNullable to handle null value easily! (RxJava2 don't support null value more and use Irrelevant or Optional everywhere is so ugly).
• From Observable/Flowable to Iterator.
• RandomOperator. Easy to shuffle.

Other many utilities

See the code!