Everyone has written software and thought if there was a better way to write this piece. Fortunately, Java is such a popular language that there are many ways to write the same code. In addition, there are several libraries or frameworks that significantly improve your code work. In this article, I have covered a few of them.
First, Spring Boot - unfortunately, the truth is bitter
Where does this subtitle come from? Because I'm a huge fan of Play Framework, but unfortunately Spring is better. And Spring Boot is a brilliant solution at all. Spring Boot greatly improves the Java application development process. Here are a few of the advantages of using Spring:
- It allows you to create standalone applications in Java.
- It has Tomcat or Jetty embedded directly, so there is no need to deploy WAR files.
- Provides automatic dependency control which simplifies configuration.
- Lets you automatically configure Spring libraries and third-party libraries where possible.
- Provides many pre-built features such as metrics and external configuration.
Spring and SpringBoot seem difficult, but the time invested is sure to pay off. Using this library reduces design development time and continues to benefit from its stability, extensibility, and readability.
Hibernate is the most popular object-oriented mapping library. It allows you to interact with databases without having to think about the SQL syntax and relationships between tables. Here are some of the advantages of using Hibernate:
- Hibernate allows you to create classes according to natural object-oriented idioms. Supports inheritance, polymorphism, associations, compositions, and collections in Java.
- Hibernate does not require any additional interfaces or base classes and preserves class or data structure persistence.
- Hibernate does not require any interfaces or base classes for persistent classes and allows any class or data structure to be persistent.
- Hibernate allows you to eliminate thousands of lines of SQL code.
Third, the Lombok project
Project Lombok is a Java library that uses annotations to reduce the pattern code. You can use annotations like @Getter to automatically generate "getField ()" methods. Here are some supported annotations:
- @Getter and @Setter, which generate Getters and Setters.
- @EqualsAndHashCode automatically generates the Equals and HashCode methods that match the Equals and HashCode contracts.
- @ToString will generate a toString () method in the format ClassName (FieldName = value, FieldName2 = value…).
- @Builder automatically implements the constructor pattern to facilitate the construction of POJO.
- @Data stands for @Getter, @Setter, @EqualsAndHashCode, @ToString, and @RequiredArgsConstructor!
There are many other supported annotations, all of which are highly customizable.
Guava is a Java library created and maintained by Google. It contains many tools that have a really wide range of applications. The main elements of Guava are:
- Extensions to a collection such as Multimap
which is a multi-value map for a given key, which corresponds to Map > with a cleaner API.
- Graphs package, which includes several data modeling tools of the chart type
- Concurrency tools such as MoreExecutors, Atomics, and ListenableFuture
Guava has many possibilities and it is worth delving into them. The library itself is maintained by Google, so we can be sure that it is thoroughly tested and carefully maintained. If we use Guava, we can be sure that many projects will be solved in a few minutes.
OpenFeign is a library made by Netflix that allows you to easily create RESTful HTTP clients in Java. To create a Feign client, simply declare an interface that lists the details of the request and response. There are tons of customizations for the Feign client:
- Encoders and decoders to choose how to serialize and deserialize POJO in the cable
- Retry to determine the retry policy and logic
- RequestInterceptory for other pre-request tasks, such as downloading cookies or authorizing
The OpenFeign library allows you to bypass the manual typing of HTTP clients. For Spring, use Spring Cloud OpenFeign.
Java, of course, can seem a bit dated. We may be missing some features that are available in some languages, but it has a huge community. There are many libraries and frameworks that you can use in your projects. In this language, there is no need to reinvent the wheel. All you have to do is focus on solving problems, and this makes our productivity increase.