2 recommended tools to use in the Java coding process

Recommended 2 tool classes that can reduce the amount of code and are easy to use during coding: for Java reflection and single-measurement assert.

1 Introduction to Mirror:java Reflection

Official website: http://projetos.vidageek.net/mirror/mirror/

Simplify the command-oriented syntax provided by the Java Native API: Class.getfield/getdeclaredfields/getmethod ()/getannotation to DSL syntax, Access field/method/ Anntation's code volume is greatly reduced, more importantly, easy to understand, it can be said that a glance to wear:
Example of the official website, modify the value of field, the Java SDK API code:

//"target" is the object containing the field whose value you want to set. null;for (Field f : target.getClass().getDeclaredFields()) {     //Get all fields DECLARED inside the target object class     if (f.getName().equals("field")) {        toSet = f;    }}ifnull0) {    toSet.setAccessible(true);    toSet.set(target, value);}

Mirror-based API

new Mirror().on(target).set().field(fieldName).withValue(value);

So as to be happy coding!!!

Characteristics

Mirror is available in the general mode:
* Field Read, modify
* Method's Read, call
* constructor read, create objects based on constructor
* Read annatation on class

and CGLIB-NODEP in combination mode to create a Java Proxy, a sentence to be done:

new Mirror().proxify(SomeClass.class)        .interceptingWith(new YourCustomMethodInterceptor());

2 ASSERTJ: Easier to use single-measurement assert

Before I met Assertj, I used the assert api,hamcrest of JUnit and hamcrest to be powerful but not easy to understand. JUnit's API: Hemp Rope for tofu-don't mention it.

ASSERTJ supports objects that specify assertions for Feild, method return values,

// common assertionsassertThat(frodo.getName()).isEqualTo("Frodo");assertThat(frodo).isNotEqualTo(sauron)                 .isIn(fellowshipOfTheRing);// String specific assertionsassertThat(frodo.getName()).startsWith("Fro")                           .endsWith("do")                           .isEqualToIgnoringCase("frodo");

And the traversal of the collection object is supported very well: You can customize the filter condition filters when traversing.

// collection specific assertionsList<TolkienCharacter> fellowshipOfTheRing = ...;assertThat(fellowshipOfTheRing).hasSize(9)                               .contains(frodo, sam)                               .doesNotContain(sauron);

There is also an interesting assert feature is continue on erros:soft-assertions

Detailed instructions for use see: joel-costigliola.github.io/assertj/assertj-core-features-highlight.html

Note
When you introduce MAVEN dependencies, be aware of the JDK version:

<dependency>  <groupId>Org.assertj</groupId>  <artifactid>Assertj-core</artifactid>  <!--use 3.0.0 for Java 8 projects  <!--2.0.0 required Java 7 --  <!--1.7.1 for Java 6 --  <version>1.7.1</version>  <scope>Test</Scope></Dependency>

The Premium API provides an API-level judgment for objects that assert guava, joda-time, neo4j, and swing.

2 recommended tools to use in the Java coding process