How do I define access modifiers in Lombok’s @Getter and @Setter annotations?

By default when we use the Lombok’s @Getter and @Setter annotations the getters and setters will be created with public access modifier. We can however change the access modifier by setting the AccessLevel of the @Getter and @Setter annotations. The available choices for the access level are AccessLevel.PUBLIC, AccessLevel.PROTECTED, AccessLevel.PACKAGE, AccessLevel.PRIVATE. These enum values correspond to Java’s access modifier. While the AccessLevel.NONE will disable the getter and setter method generation.

package org.kodejava.example.lombok.domain;

import lombok.AccessLevel;
import lombok.Getter;
import lombok.Setter;

@Getter @Setter
public class Person {
    @Setter(AccessLevel.PROTECTED)
    private String firstName;

    private String lastName;
    private String gender;

    @Getter(AccessLevel.PRIVATE)
    private int age;
}

How we use the Person class show in the snippet below:

package org.kodejava.example.lombok;

import org.kodejava.example.lombok.domain.Person;

public class PersonDemo {
    public static void main(String[] args) {
        Person person = new Person();
        person.setLastName("Bar");
        person.setGender("M");
        person.setAge(20);

        System.out.println(person.getFirstName());
        System.out.println(person.getLastName());
        System.out.println(person.getGender());
    }
}

If we try to see the generated class of the Person class we can run the following command to disassemble the class.

javap -p -cp . org.kodejava.example.lombok.domain.Person

And we got the following output of the javap command. As we can see that the setFirstName() method have a protected access modifier and the getAge() method have a private access modifier. The other mutator and accessor method all set to public access modifier.

public class org.kodejava.example.lombok.domain.Person {
  private java.lang.String firstName;
  private java.lang.String lastName;
  private java.lang.String gender;
  private int age;
  public org.kodejava.example.lombok.domain.Person();
  public java.lang.String getFirstName();
  public java.lang.String getLastName();
  public java.lang.String getGender();
  public void setLastName(java.lang.String);
  public void setGender(java.lang.String);
  public void setAge(int);
  protected void setFirstName(java.lang.String);
  private int getAge();
}

Maven Dependencies

<!--https://search.maven.org/remotecontent?filepath=org/projectlombok/lombok/1.18.4/lombok-1.18.4.jar-->
<dependency>
  <groupId>org.projectlombok</groupId>
  <artifactId>lombok</artifactId>
  <version>1.18.4</version>
</dependency>

Maven Central

How do I get modifiers of a class object?

package org.kodejava.example.reflect;

import java.lang.reflect.Modifier;

public class ClassModifier {
    public static void main(String[] args) {
        getClassModifier(String.class);        
        getClassModifier(TestA.class);
        getClassModifier(TestB.class);
    }

    private static void getClassModifier(Class clazz) {
        int modifier = clazz.getModifiers();

        // Return true if the integer argument includes the public modifier,
        // false otherwise.
        if (Modifier.isPublic(modifier)) {
            System.out.println(clazz.getName() + " class modifier is public");
        }

        // Return true if the integer argument includes the protected modifier,
        // false otherwise.
        if (Modifier.isProtected(modifier)) {
            System.out.println(clazz.getName() + " class modifier is protected");
        }

        // Return true if the integer argument includes the private modifier,
        // false otherwise.
        if (Modifier.isPrivate(modifier)) {
            System.out.println(clazz.getName() + " class modifier is private");
        }

        // Return true if the integer argument includes the static modifier,
        // false otherwise.
        if (Modifier.isStatic(modifier)) {
            System.out.println(clazz.getName() + " class modifier is static");
        }

        // Return true if the integer argument includes the final modifier,
        // false otherwise.
        if (Modifier.isFinal(modifier)) {
            System.out.println(clazz.getName() + " class modifier is final");
        }

        // Return true if the integer argument includes the abstract modifier,
        // false otherwise.
        if (Modifier.isAbstract(modifier)) {
            System.out.println(clazz.getName() + " class modifier is abstract");
        }
    }

    protected static final class TestA {
    }

    private abstract class TestB {
    }
}