title: How to get first day of a given week number in Java
body: <p>Let me explain myself. By knowing the week number and the year of a date:</p>
  
  <pre><code>Date curr = new Date();
  Calendar cal = Calendar.getInstance();
  cal.setTime(curr);
  int nweek = cal.WEEK_OF_YEAR;
  int year = cal.YEAR;
  </code></pre>
  
  <p>But now I don't know how to get the date of the first day of that week. I've been looking in Calendar, Date, DateFormat but nothing that may be useful... </p>
  
  <p>Any suggestion? (working in Java)</p>