public void test(List<Object> c)  
{  
   for(int i = 0;i < c.size();i++)  
   {  
       System.out.println(c.get(i));  
   }  
}  

//创建一个List<String>对象  
List<String> strList = new ArrayList<String>();  
//将strList作为参数来调用前面的test方法  
test(strList);  

public void test(List<?> c)  
{  
   for(int i = 0;i < c.size();i++)  
   {  
       System.out.println(c.get(i));  
   }  
}  

class MyClass<T, U>  
  where T : class  
  where U : struct  
{}  

interface IMyInterface  
{  
}  
  
class Dictionary<TKey, TVal>  
  where TKey : IComparable, IEnumerable  
  where TVal : IMyInterface  
{  
  public void Add(TKey key, TVal val)  
  {  
  }  
}  

//表明T类型必须是Number类或其子类,并必须实现java.io.Serializable接口  
Public class Apple<T extends Number & java.io.Serializable>  
{}