How does the enhanced for statement work for arrays, and how to get an iterator for an array?

by

If you want an Iterator over an array, you could use one of the direct implementations out there instead of wrapping the array in a List. For example:

Apache Commons Collections ArrayIterator

Or, this one, if you’d like to use generics:

com.Ostermiller.util.ArrayIterator

Note that if you want to have an Iterator over primitive types, you can’t, because a primitive type can’t be a generic parameter. E.g., if you want an Iterator<int>, you have to use an Iterator<Integer> instead, which will result in a lot of autoboxing and -unboxing if that’s backed by an int[].

More Related Contents:

  1. Calling remove in foreach loop in Java [duplicate]
  2. How does primitive array work with new for each loop in Java?
  3. Java Modifying Elements in a foreach
  4. For-each vs Iterator. Which will be the better option
  5. Multiplication based on input integer and return array- Need help in storing array while looping
  6. Why Java Only Allows String[] args as Main method Argument? [duplicate]
  7. I have a function in java which may have bug and I can not find it [closed]
  8. Arrays.asList() not working as it should?
  9. How to convert jsonString to JSONObject in Java
  10. Array or List in Java. Which is faster?
  11. A quick and easy way to join array elements with a separator (the opposite of split) in Java [duplicate]
  12. How to supply value to an annotation from a Constant java
  13. What is this: [Ljava.lang.Object;?
  14. Creating an array of objects in Java
  15. Immutable array in Java
  16. Quickest way to find missing number in an array of numbers
  17. Java for loop syntax: “for (T obj : objects)”
  18. Lambda expression to convert array/List of String to array/List of Integers
  19. Using GSON to parse a JSON array
  20. Why isn’t this code causing a ConcurrentModificationException? [duplicate]
  21. forEach vs forEachOrdered in Java 8 Stream
  22. Byte Array to Image object
  23. String array initialization in Java [duplicate]
  24. Print array without brackets and commas
  25. Sort a parallel array using Arrays.sort()
  26. How to create ArrayList (ArrayList) from array (int[]) in Java
  27. Explanation on Integer.MAX_VALUE and Integer.MIN_VALUE to find min and max value in an array
  28. Return the index of clicked button?
  29. Create an array of ArrayList elements
  30. How to read from files with Files.lines(…).forEach(…)?

Leave a Comment