The introduction of Project Lombok, a combination compile-time and development-time code generator, has made Java POJO verbosity history. Add Lombok to your daily coding practices, and you won't go back.
The document discusses Project Lombok, an annotation processing library that automatically plugs into Java compilers to generate code and reduce boilerplate. It provides examples of how Lombok annotations like @NonNull, @Slf4j, and @Data can be used to simplify code for null checks, logging initialization, and boilerplate getters/setters/equals/hashcode methods respectively. The @Data annotation in particular combines the effects of @Getter, @Setter, @RequiredArgsConstructor, @ToString, and @EqualsAndHashCode. Additional information on Project Lombok and its annotations can be found on its website at https://projectlombok.org/.
The introduction of Project Lombok, a combination compile-time and development-time code generator, has made Java POJO verbosity history. Add Lombok to your daily coding practices, and you won't go back.
The document discusses Project Lombok, an annotation processing library that automatically plugs into Java compilers to generate code and reduce boilerplate. It provides examples of how Lombok annotations like @NonNull, @Slf4j, and @Data can be used to simplify code for null checks, logging initialization, and boilerplate getters/setters/equals/hashcode methods respectively. The @Data annotation in particular combines the effects of @Getter, @Setter, @RequiredArgsConstructor, @ToString, and @EqualsAndHashCode. Additional information on Project Lombok and its annotations can be found on its website at https://projectlombok.org/.
Lombok is a small, but very useful library that helps to remove smelly Java boilerplate. Are you tired of writing getters and setters, builders or even constructors? Want to generate toString() / equals() / hashCode() or immutable class very fast? Lombok spices up these and many other experiences by allowing you to achieve small goals declaratively and effectively. This presentation accompanied live coding session at JEEConf 2016
Project Lombok aims to reduce boilerplate code in Java by using annotations to generate getter/setter methods, toString(), equals() and hashCode() implementations. It works by processing the annotations at compile time to eliminate the need for developers to manually write these common methods. Lombok also includes a delombok tool to convert annotated code into plain Java that can be used by developers not using Lombok.
Update on Project Valhalla delivered during the Japan Java User's Group Cross Community Conference Spring 2019 Keynote. After a very brief review of Project Valhalla and its goals, we cover nest-based access control (JEP 181, new in JDK 11) and an overview of the currently available value type prototypes (MVT and LW1).
Lombok is a small, but very useful library that helps to remove smelly Java boilerplate. Are you tired of writing getters and setters, builders or even constructors? Want to generate toString() / equals() / hashCode() or immutable class very fast? Lombok spices up these and many other experiences by allowing you to achieve small goals declaratively and effectively. This presentation accompanied live coding session at JEEConf 2016
Project Lombok aims to reduce boilerplate code in Java by using annotations to generate getter/setter methods, toString(), equals() and hashCode() implementations. It works by processing the annotations at compile time to eliminate the need for developers to manually write these common methods. Lombok also includes a delombok tool to convert annotated code into plain Java that can be used by developers not using Lombok.
Update on Project Valhalla delivered during the Japan Java User's Group Cross Community Conference Spring 2019 Keynote. After a very brief review of Project Valhalla and its goals, we cover nest-based access control (JEP 181, new in JDK 11) and an overview of the currently available value type prototypes (MVT and LW1).
10. @Setter, @Getter
class Box {
private String name;
public void setName(String name) {
this.name = name;
}
!
public String getName() {
return name;
}
!
}
class Box {
@Setter
@Getter
private String name;
}
11. @ToString,
@ToString
class Box {
@Setter
private String name;
!
@Setter
private int age;
}
val
class Main {
public static void main(String[] args) {
val box = new Box();
box.setName(“hoge”);
box.setAge(21);
!
System.out.println(box);
}
}
実行結果
Box(name=hoge, age=21)
