There is a comparison of String objects using the =! operator in method SwingSet2.setLookAndFeel(String):

   public void setLookAndFeel(String laf) {
if(currentLookAndFeel != laf) {
currentLookAndFeel = laf;
   [--snip--]

As it is not guaranteed, that all Strings passed to the setLookAndFeel() are in the String pool, the equal() method should be used for the comparison.

###@###.### 2005-1-25 14:43:23 GMT