title: How to avoid null values in jasper reports
body: <p>I have a field in my jasper report which has a expression value like</p>
  
  <pre><code>$F{address_street1}+" "+$F{address_street2}+ " " +$F{address_state} + " "+$F{address_country}+ " "+$F{address_zip}
  </code></pre>
  
  <p>My problem is that if any of the fields in here is null I get the null value between other things like</p>
  
  <pre><code>101 Main St****null****ILUnited States12345 
  </code></pre>
  
  <p>Notice the highlighted null. Is there any way I can avoid that?</p>
  
  <p>I have tried checking the null value for a particular field in it using boolean expression and replacing it with blank, but that doesn't seem to work.</p>