How to implement JQuery-like class in Java

jquery.java

// How to make JQuery-like function in Java 

// shamansir.github.com (c)

public interface ProvidesElements {
    public Elements[] get();
}

public class JQ implements ProvidesElements {

    . . .

    public static JQ do(ProvidesElements elements) {
       instance.elements = elements.get();
       return instance;
    }

    public static ProvidesElements query(String query) {
       return do(new Selector(query));
    } 

    public JQ each(Callback callback) {
       for (Element elm: this.elements) {
           callback(elm);
       }
       return this;
    }

    public JQ css(String attr, String value) {
       for (Element elm: this.elements) {
           elm.getStyle().setAttribute(attr, value);
       }
       return this;
    }

    public JQ prev() {
       return instance.findPrev(); // over this.elements
    }

    public Value val() {
       return extractValue(this.elements);
    }
 
    public Element[] get() {
       return this.elements;
    }

    . . .

    public class Selector implements ProvidesElements {
        public Selector(String query) { .... }
        public Element[] get() { return Document.query(this.query) }
    } 

    public class ElementsArray extends ArrayList<Element> implements ProvidesElements {
        public Element[] get() { return asArray(); };
    }

    public class Element implements ProvidesElements {
        private final ArrayList<Element> = new ArrayList<Element>(1);
        public Element[] get() { list.clear(); list.add(this); return list; };
    }

    public class Html implements ProvidesElements {
        public Html(String html) { .... }
        public Element[] get() { return parseHtml(html); };
    }

}

// Usage:

JQ.do(new Selector("a :first")).each(...).css(...).prev()...
JQ.do(new Html("<span>foo</span>")).each(...).css(...)...
JQ.do(JQ.query(".class")).each(...).css(...).val()

// Conforming to: http://api.jquery.com/jQuery/