title: Using + to concat string in Java
body: <p>I have a huge string as below :</p>
  
  <pre><code>String str = "aaaaaaa" 
          + "bbbbbbbb" 
          + "cccccccc" 
      .... 
  
          + "zzzzzzzz";  // about 200 lines long
  </code></pre>
  
  <p>Is it a big waste of memory? Will it be better to put it in one line or use <code>StringBuilder</code>?
  This is done to create a long sql.</p>