title: Waiting for a response in a thread
body: <p>I want to recycle my image , but since another thread is rendering them, I need to be sure that the rendering has stopped:</p>
  
  <pre><code>     private void unload() {
          System.out.println("Unloading menu...");
          loaded = false;
          while(rendering) {
              //wait
          }
          background.recycle();  
          button.recycle();
          button_pushed.recycle();
       }
  </code></pre>
  
  <p>But I dont think this is the best way , are their other ways to do this?</p>