Basic Sling Model Example

/*
<div data-sly-use.object="com.org.project.models.PageModel"/>
${object.title}
</div>
*/

package com.org.project.models; 

import org.apache.sling.api.resource.Resource;
import org.apache.sling.models.annotations.DefaultInjectionStrategy;
import org.apache.sling.models.annotations.Model;
import org.apache.sling.models.annotations.Required;
import org.apache.sling.models.annotations.injectorspecific.Self; 

import javax.annotation.PostConstruct;
import javax.inject.Inject;
import javax.inject.Named;

@Model(
adaptables = Resource.class,
defaultInjectionStrategy = DefaultInjectionStrategy.OPTIONAL)

public class PageModel {

@Self
private Resource resource;

@Inject @Named("jcr:title") @Required
private String title;

@PostConstruct
private void init() {
}

public String getTitle() {
return title;
}
}