title: Why does System.getProperty("java.io.tmpdir") return a read-only directory on Mac OS X Catalina 10.15
body: <p>This method used to return a writable directory until Mac OS X Mojave. Starting with Catalina.
  Is there a way to add writability to the permissions of this temporary dir returned?</p>
  
  <blockquote>
    <p>ls -larth<br>
    /var/folders/qx/045nmsxx55575_gqycvvs1480000gp/T/1579829982927-0 total 16<br>
    drwxr-xr-x    4 me  staff   128B Jan 23 17:39 .<br>
    <strong>drwx------@ 118 me  staff   3.7K Jan 23 17:39 ..</strong></p>
  </blockquote>