From fbf08a1f5a164914fef4214778a24775891eead4 Mon Sep 17 00:00:00 2001
From: jprocter <Jim Procter>
Date: Fri, 2 Apr 2010 09:39:51 +0000
Subject: [PATCH] avoid occasional null exception

---
 src/jalview/gui/Desktop.java |    8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/jalview/gui/Desktop.java b/src/jalview/gui/Desktop.java
index 7a8789d..77cf56f 100755
--- a/src/jalview/gui/Desktop.java
+++ b/src/jalview/gui/Desktop.java
@@ -1650,11 +1650,13 @@ public class Desktop extends jalview.jbgui.GDesktop implements
       {
         if (percentUsage < 20)
           g.setColor(Color.red);
-
-        g.drawString("Total Free Memory: " + df.format(totalFreeMemory)
+        FontMetrics fm = g.getFontMetrics();
+        if (fm!=null)
+        { g.drawString("Total Free Memory: " + df.format(totalFreeMemory)
                 + "MB; Max Memory: " + df.format(maxMemory) + "MB; "
                 + df.format(percentUsage) + "%", 10, getHeight()
-                - g.getFontMetrics().getHeight());
+                - fm.getHeight());
+        }
       }
     }
 
-- 
1.7.10.2