Composite design pattern

[meeta gaur]

Hi,
i created this program from my understanding, do you think this is correct example of composite design pattern ?

interface Component {

	public void hello();
}

class Leaf implements Component {

	public void hello() {
		System.out.println("leaf says hello");
	}
}

class Composite implements Component {
	private Leaf l=new Leaf();	
	public void hello() {
		l.hello();
	}
}

public class CompositeTest {

	public static void main(String[] args) {

		Composite composite=new Composite();
		composite.hello();
	}
}

[Matthew Brown]

No, because all that allows you to go is have a Composite containing a single Leaf. The idea behind the composite pattern is to allow you to build a hierarchy of grouped objects. So what you need is to implement it so that each Composite object can contain multiple Component objects (not just Leafs). That way you can put Composites inside Composites.