Class.isInstance和Class.cast的编译错误

Question

我的代码如下，但我收到了编译错误

The method isInstance(MyClass) is undefined for the type Class<T>
The method cast(MyClass) is undefined for the type Class<T>

代码：

 public <T extends MyClass> Collection<T> myMethodName(
      Class<T> theClass) {
    Set<T> result = Sets.newHashSet();

    for (MyClass myObject : myObjects) {
      if ( theClass.isInstance(myObject)) {
        result.add(theClass.cast(myObject));
      }
    }

    return result;
  }