Java Vector or ArrayList for Primitives
arraylist, java, primitive, primitive-types, vector
Solution
There is unfortunately no such class, at least in the Java API. There is the Primitive Collections for Java 3rd-party product.
It's pretty dangerous to use auto-boxing together with existing collection classes (in particular `List` implementations). For example:
List<Integer> l = new ArrayList<Integer>();
l.add(4);
l.remove(4); //will throw ArrayIndexOutOfBoundsException
l.remove(new Integer(4)); //what you probably intended!
And it is also a common source of mysterious `NullPointerExceptions` accessing (perhaps via a `Map`):
Map<String, Integer> m = new HashMap<String, Integer>();
m.put("Hello", 5);
int i = m.get("Helo Misspelt"); //will throw a NullPointerException
Problem
Is there an expandable array class in the Java API equivalent to the `Vector` or `ArrayList` class that can be used with primitives (int, char, double, etc)? I need a quick, expandable array for integers and it seems wasteful to have to wrap them in the `Integer` class in order to use them with `Vector` or `ArrayList`. My google-fu is failing me.