Friday, February 12, 2016

Designing your own iterable stuff

Or, simply, implementing iterator logic in your own class, on which you can iterate or even use for-each loop. Because, for-each works only on Iterator based collections.
Following is a generic Java 7 code that takes into account a simple custom linked list implementation that is generic and can be iterated over, using following steps.
1. The stuff we want to iterate upon has to be Iterable and expose
2. Design a java.util.Iterator by overriding hasNext(), next() and remove().