How to access the properties of a component from another component which lies on same page? AEM Java Sling

Question

Assume We have component A and Component B on Home page of AEM instance. I want Component A properties value on Component B in sling java class.

Can you please provide some code to explain your answer. It would be easy for me to understand

Answer 1

@PostConstruct
protected void init() {
    // ArrayList<Resource> childList = new ArrayList<Resource>();
    Resource childResource = resource.getParent();
    if (childResource != null) {
        Iterator<Resource> children = childResource.listChildren();
        while (children.hasNext()) {
            Resource child = children.next();
            String parentNodeName = child.getName();
            if (parentNodeName.equals("component-a")) {
                // childList.add(child); 
                title = child.getValueMap().get("headline", "headline value");
            }
        }
    }
}

Assigned Component A property(headline) value to Component B property(title)