追求代码质量: 不要被覆盖报告所迷惑

package com.vanward.adana.hierarchy;
public class HierarchyBuilder {  
  private HierarchyBuilder() {
    super();		
  }
  public static Hierarchy buildHierarchy(final String clzzName) 
    throws ClassNotFoundException{
      final Class clzz = Class.forName(clzzName, false, 
          HierarchyBuilder.class.getClassLoader());        
      return buildHierarchy(clzz);
  }
  public static Hierarchy buildHierarchy(Class clzz){
    if(clzz == null){
      throw new RuntimeException("Class parameter can not be null");
    }
    final Hierarchy hier = new Hierarchy();
    hier.setBaseClass(clzz);
    final Class superclass = clzz.getSuperclass();
    if(superclass != 
      null && superclass.getName().equals("java.lang.Object")){
       return hier; 
    }else{      
       while((clzz.getSuperclass() != null) && 
          (!clzz.getSuperclass().getName().equals("java.lang.Object"))){
             clzz = clzz.getSuperclass();
             hier.addClass(clzz);
       }	        
       return hier;
    }
  }      
}