A function to safely cast a long to an int without relying on any external libraries. From the brilliant Jon Skeet @ http://stackoverflow.com/questions/1590831/safely-casting-long-to-int-in-java

safeLongToInt.java

public static int safeLongToInt(long l) {
    if (l < Integer.MIN_VALUE || l > Integer.MAX_VALUE) {
        throw new IllegalArgumentException
            (l + " cannot be cast to int without changing its value.");
    }
    return (int) l;
}