container with most water

public int (int[] height) {
    if (height == null || height.length <= 1)
        return 0;
    int begin = 0, end = height.length - 1;
    int max = 0;
    while (begin < end) {
        int h = Math.min(height[begin], height[end]);
        int w = end - begin;
        max = Math.max(h * w, max);
        if (height[begin] < height[end])
            ++begin;
        else
            --end;
    }
    return max;
}