int number = 110101;
String temp = Integer.toString(number);
int[] numbers = new int[temp.length()];
for (int i = 0; i < temp.length(); i++) {
numbers[i] = temp.charAt(i) - '0';
}
int i, k = 0;
for (i = 0; i < n; i++)
k = 10 * k + a[i];
int[] oldArray;
... // Here you would assign and fill oldArray
Integer[] newArray = new Integer[oldArray.length];
int i = 0;
for (int value : oldArray) {
newArray[i++] = Integer.valueOf(value);
}