package com.wiley.compBooks.EJwithUML.Base.HtmlPrimitives.Layout;import com.wiley.compBooks.EJwithUML.Base.HtmlPrimitives.Core.*;import java.util.*;/** * The CompositePrimitive class concatenates multiple primitives together. */public class CompositePrimitive implements IHtmlPrimitive{  private List primitives = new ArrayList();  /** Add a primitive to this composite. */  public void addPrimitive(IHtmlPrimitive primitive)  {    this.primitives.add(primitive);  }  /** Build the content for this primitive and append it to the specified buffer.*/  public void buildContent(StringBuffer buffer)  {    Iterator iterator = primitives.iterator();    while (iterator.hasNext())    {      IHtmlPrimitive primitive = (IHtmlPrimitive) iterator.next();      primitive.buildContent(buffer);    }  }}