Primitive Array to Object[]
If ever you face the need of ‘boxing’ the elements of a primitive array into an array of Objects, this might be handy:
public static Object[] convertPrimitiveArray(final Object array)
{
final int arrayLength = Array.getLength(array);
final Object[] result = (Object[]) Array.newInstance(Object.class, arrayLength);
for (int i = 0; i < arrayLength; i++)
{
Array.set(result, i, Array.get(array, i));
}
return result;
}
You can generify the method to have the wrapper return type (at the cost of unchecked cast).
public static T[] convertPrimitiveArray(final Object array, Class wrapperClass) {
final int arrayLength = Array.getLength(array);
final T[] result = (T[]) Array.newInstance(wrapperClass, arrayLength);
for (int i = 0; i < arrayLength; i++) {
Array.set(result, i, Array.get(array, i));
}
return result;
}
sure, but then it´d be public static T[] convertPrimitiveArray(final Object array, Class wrapperClass)
but it throws RTEs at you anyway