How to create an infinite Stream out of an Iterator?

Question

Looking at the following class I\'ve made:

public class FibonacciSupplier implements Iterator {
    private final IntPredicate hasNextPredicat         


        

Answer 1

You can use the low level stream support primitives and the Spliterators library to make a stream out of an Iterator.

The last parameter to StreamSupport.stream() says that the stream is not parallel. Be sure to let it like that because your Fibonacci iterator depends on previous iterations.

return StreamSupport.stream( Spliterators.spliteratorUnknownSize( new Iterator()
{
    @Override
    public boolean hasNext()
    {
        // to implement
        return ...;
    }

    @Override
    public ContentVersion next()
    {
        // to implement
        return ...;
    }
}, Spliterator.ORDERED ), false );