UtilsForCollections.java

public static List<Integer> toList(int[] array) {
    return Arrays.stream(array).boxed().collect(Collectors.toList());
}
public static List<Long> toList(long[] array) {
    return Arrays.stream(array).boxed().collect(Collectors.toList());
}
public static List<Double> toList(double[] array) {
    return Arrays.stream(array).boxed().collect(Collectors.toList());
}