问题
I am extending ArrayList to create a custom ArrayList that can be modified using normal ArrayList methods while iterating over it. For this I am also creating an Iterator.
public class SynchronizedList<E> extends ArrayList<E>
{
// Fields here
//Constructors and methods here
public class SynchronizedListIterator<E> implements Iterator<E>
{
public int index;
private E current;
public boolean hasNext()
{
synchronized (/* reference to enclosing List object */) {
//code goes here
}
return false;
}
//more methods here
}
}
During my hasNext() and next() methods, I need to make sure the list is not modified (it can be modified at any other time). Hence I need to refer to my enclosing type in my synchronized() block.
回答1:
EnclosingType.this
. So in your case, it would be SynchronizedList.this
.
来源:https://stackoverflow.com/questions/10059951/how-to-refer-to-enclosing-class-from-inner-class