public class Entity {
    @Indexable(isKey = true)
    private String id;
    private String title;
    private String Content;
    
    // getters and setters
    // ...
}

Entity entity = new Entity();
entity.setId("<id>");
entity.setTitle("Hello World");
entity.setContent("This is the content.");

IndexService indexService = new IndexService("<path for index persistence>");
indexService.createIndex(entityInstance);
indexService.deleteIndex(Entity.class, "<id>");
SearchResult<Entity> matched = indexService.search("world", Entity.class, 1, 10);

<dependency>
    <groupId>net.bndy</groupId>
    <artifactId>ftsi</artifactId>
    <version>1.0</version>
</dependency>