Here is an example of using the BaseSettings class from the com.fasterxml.jackson.databind package in the Jackson library for Java:

import com.fasterxml.jackson.databind.BaseSettings;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;

public class Example {
    public static void main(String[] args) {
        // create a new BaseSettings object with default configuration
        BaseSettings baseSettings = new BaseSettings();
        // enable pretty-printing
        baseSettings = baseSettings.with(SerializationFeature.INDENT_OUTPUT, true);

        // create a new ObjectMapper with the custom BaseSettings
        ObjectMapper mapper = new ObjectMapper(baseSettings);

        // example input object
        Person person = new Person("John", 30);

        try {
            // use the ObjectMapper to serialize the input object to JSON
            String json = mapper.writeValueAsString(person);
            System.out.println(json);
        } catch (JsonProcessingException e) {
            e.printStackTrace();
        }
    }
}

class Person {
    private String name;
    private int age;

    public Person(String name, int age) {
        this.name = name;
        this.age = age;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }
}

This example uses the BaseSettings class to configure a new ObjectMapper with custom settings, in this case the pretty-printing feature is enabled, then it uses the ObjectMapper to serialize an example object to JSON.