How do I iterate through collection classes in Java?

How do I iterate through collection classes in Java?

In Java, you can iterate through collection classes using loops like for-each, Iterator, or streams. Which one would you like to know more about?

Can you explain how to use the Iterator?

Sure! You can obtain an Iterator from a collection using the iterator() method. Then, you can use hasNext() and next() methods to traverse the collection.

What about using the for-each loop?

The for-each loop is a simpler way to iterate through collections. You can use it like this: for (ElementType element : collection) { // process element }.

Are there any performance differences between these methods?

Yes, using an Iterator can be more efficient for large collections, especially when removing elements during iteration. The for-each loop is more readable but may not be as efficient in some cases.