How to find the median for an array of numbers for java? : <pre><code>public double median(){
double input =0;
double answer =sum() * (input) / data.length;
    return answer;
    }
</code></pre>

<p>This is my code I have for median but it keeps returning as zero when I run the program. The array of numbers are: {3.0, 15.0, 7.0, 27.0};</p>
