How do I convert from int to Long in Java?
casting, int, java, long-integer
Solution
Note that there is a difference between a cast to `long` and a cast to `Long`. If you cast to `long` (a primitive value) then it should be automatically boxed to a `Long` (the reference type that wraps it).
You could alternatively use `new` to create an instance of `Long`, initializing it with the `int` value.
Problem
I keep finding both on here and Google people having troubles going from `long` to `int` and not the other way around. Yet I'm sure I'm not the only one that has run into this scenario before going from `int` to `Long`. The only other answers I've found were "Just set it as Long in the first place" which really doesn't address the question. I initially tried casting but I get a "`Cannot cast from int to Long`" ``` for (int i = 0; i < myArrayList.size(); ++i ) { content = new Content(); content.setDescription(myArrayList.get(i)); content.setSequence((Long) i); session.save(content); } ``` As you can imagine I'm a little perplexed, I'm stuck using `int` since some content is coming in as an `ArrayList` and the entity for which I'm storing this info requires the sequence number as a Long.