Skip to main content

Project Lombok is New Feature or plugin

Project Lombok is a Java library tool that generates code for minimizing boilerplate code. The library replaces boilerplate code with easy-to-use annotations.

For example, by adding a couple of annotations, you can get rid of code clutters, such as getters and setters methods, constructors, hashcode, equals, and toString methods, and so on.

We have written a lot of boilerplate code such as getter, setter, equals, hashCode methods etc. in Java for years. In some cases, this causes problems in subjects like clean and readable code.

For such situations, Project Lombok saves our eyes  . Also, you will be able to spend more time on the business logic using Lombok.

“Never write another getter or equals method again, with one annotation your class has a fully featured builder, Automate your logging variables, and much more.”

Project Lombok uses annotations to avoid boilerplate code. In the best cases, only five lines can replace hundreds of lines of code.


@Data
@AllArgsConstructor
@NoArgsConstructor
@Entity
@Table
public class Book {
@Id
@GeneratedValue
private Long id;
private String writer;
private String name;
private String genre;
private String year;
}

Descriptions of used annotations according to JavaDoc:

  • @Data : “Generates getters for all fields, a useful toString method, and hashCode and equals implementations that check * all non-transient fields. Will also generate setters for all non-final fields, as well as a constructor.”
  • @AllArgsConstructor : “Generates a all-args constructor.”
  • @NoArgsConstructor : “Generates a no-args constructor.”
  • @Slf4j : “Causes lombok to generate a logger field.”



Comments

Post a Comment

Popular posts from this blog

Java RoadMap

 
Post a Comment
Read more

What does :: mean in Java?

The :: operator refers to a method reference.   A method reference is a simplified way of writing a lambda expression in order to call a method. Method references allow you to call a method by mentioning its name. The syntax for a method reference is as follows: COPY Object :: methodName There are  four  ways to use a method reference: A method reference to a static method. A method reference to an instance method of an object. A method reference to instance methods of an arbitrary object of a particular type. A method reference to a constructor. METHOD REFERENCE TO A STATIC METHOD Let's take a look at the code snippet below: COPY import java.util.function.BiFunction; class Maths { public static int printAddition( int x, int y){ return x + y; } } public class Main { public static void main( String [] args) { BiFunction< Integer , Integer , Integer > addition = Maths::printAddition; int result = addition.apply(...
1 comment
Read more

Mastering Java Streams: Best Practices and Common Pitfalls

  Introduction Java Streams, introduced in Java 8, have revolutionized the way developers handle collections and data processing in Java. However, mastering Streams requires understanding not just the syntax but also the best practices and common pitfalls that can arise. In this post, we'll explore advanced tips for working with Java Streams, helping you write more efficient, readable, and maintainable code. Table of Contents Introduction to Java Streams Best Practices for Using Streams Leverage Parallel Streams Wisely Avoid State Mutations in Stream Operations Use Method References for Cleaner Code Short-Circuiting Operations for Efficiency Common Pitfalls in Java Streams Overusing Parallel Streams Modifying Collections During Stream Operations Ignoring Lazy Evaluation Improper Use of Optional with Streams Advanced Stream Operations Grouping and Partitioning Collectors and Custom Collectors FlatMap for Complex Mappings Conclusion 1. Introduction to Java Streams Java Streams provid...
Post a Comment
Read more