Convert a double array to Double ArrayList

Question

When I try to convert a double array to a Double arrayList I got the following error:

Exception in thread \"main\" java.lang.ClassCastException: [D ca

Answer 1

Guava's version is even shorter:

List list = Doubles.asList(doubleArray);

Reference:

• Doubles.asList(double ...)

Note: This is a varargs method. All varargs methods can be called using an array of the same type (but not of the corresponding boxed / unboxed type!!). These two calls are equivalent:

Doubles.asList(new double[]{1d,2d});
Doubles.asList(1d,2d);

Also, the Guava version doesn't do a full traverse, it's a live List view of the primitive array, converting primitives to Objects only when they are accessed.