<h2>org.das2.system.NullPreferencesFactory</h2><p>Creates NullPreferences for use with applets.  The system property 
 java.util.prefs.PreferencesFactory should be set to
 org.das2.system.NullPreferencesFactory to use this class.
 
 System.setProperty( "java.util.prefs.PreferencesFactory", "org.das2.system.NullPreferencesFactory" ) doesn't
 work in applets--security exception.

 Also this works: java  -Djava.util.prefs.PreferencesFactory=org.das2.system.NullPreferencesFactory ...
 
 I'm not sure where I found this solution originally, but here is a nice writeup:
     http://www.allaboutbalance.com/articles/disableprefs/</p>
<h2>NullPreferencesFactory( )</h2>
<p></p>

<hr>
<a name="systemRoot"></a>
<h2>systemRoot</h2>
systemRoot(  ) &rarr; <a href='https://docs.oracle.com/javase/8/docs/api/java/util/prefs/Preferences.html'>java.util.prefs.Preferences</a>

<p></p>

<h3>Returns:</h3>
java.util.prefs.Preferences

<br><br>
<a href="https://github.com/autoplot/dev/search?q=systemRoot&unscoped_q=systemRoot">[search for examples]</a>
 <a href="https://github.com/autoplot/documentation/tree/master/javadoc/org/das2/system/NullPreferencesFactory.md">[view on GitHub]</a>
 <a href="http://www-pw.physics.uiowa.edu/~jbf/autoplot/javadoc2018/org/das2/system/NullPreferencesFactory.html#systemRoot">[view on old javadoc]</a>
 <a href="https://saturn.physics.uiowa.edu/svn/das2/dasCore/community/autoplot2011/trunk/dasCore/src/org/das2/system/NullPreferencesFactory.java">[view source]</a>
<br>
<br>
<hr>
<a name="userRoot"></a>
<h2>userRoot</h2>
userRoot(  ) &rarr; <a href='https://docs.oracle.com/javase/8/docs/api/java/util/prefs/Preferences.html'>java.util.prefs.Preferences</a>

<p></p>

<h3>Returns:</h3>
java.util.prefs.Preferences

<br><br>
<a href="https://github.com/autoplot/dev/search?q=userRoot&unscoped_q=userRoot">[search for examples]</a>
 <a href="https://github.com/autoplot/documentation/tree/master/javadoc/org/das2/system/NullPreferencesFactory.md">[view on GitHub]</a>
 <a href="http://www-pw.physics.uiowa.edu/~jbf/autoplot/javadoc2018/org/das2/system/NullPreferencesFactory.html#userRoot">[view on old javadoc]</a>
 <a href="https://saturn.physics.uiowa.edu/svn/das2/dasCore/community/autoplot2011/trunk/dasCore/src/org/das2/system/NullPreferencesFactory.java">[view source]</a>
<br>
<br>