_[Original issue](https://code.google.com/p/guava-libraries/issues/detail?id=1259) created by **yurachud** on 2013-01-16 at 04:20 PM_

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If we pass null to Ints.tryParse it throws NullPointerException.
Method uses AndroidInteger.tryParse(), but the first line there is checkNotNull() method.

public int size() {
      return end - start;
    }
    @Override
    public boolean isEmpty() {
      return false;
    }
    @Override
    public Integer get(int index) {
      checkElementIndex(index, size());
      return array[start + index];
    }
    @Override
    public boolean contains(Object target) {
      
      return (target instanceof Integer) && Ints.indexOf(array, (Integer) target, start, end) != -1;
    }
    @Override
    public int indexOf(Object target) {
      
      if (target instanceof Integer) {
        int i = Ints.indexOf(array, (Integer) target, start, end);
        if (i >= 0) {
          return i - start;
        }
      }
      return -1;
    }
    @Override
    public int lastIndexOf(Object target) {