Java foreach syntax

Source: Internet
Author: User

1. java foreach can traverse the array and all Collection objects (the Collection interface includes iterator (), so all classes that implement the Collection interface can perform foreach traversal ).
2. Because ipve5 introduces a new Iterable interface, which contains an Iterator () method that can generate iterator, And the Iterable interface is used by foreach to move in the sequence.
3. Therefore, you can use foreach to traverse a class that implements the Iterable interface.

4.


 
Returns an anonymous internal class instance that implements Iterable <String>.

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