JAL-1982 defensive checks for null annotations array

[jalview.git] / src / jalview / analysis / AlignmentUtils.java

diff --git a/src/jalview/analysis/AlignmentUtils.java b/src/jalview/analysis/AlignmentUtils.java
index 081f446..33a54e8 100644 (file)
--- a/src/jalview/analysis/AlignmentUtils.java
+++ b/src/jalview/analysis/AlignmentUtils.java
@@ -1332,15 +1332,19 @@ public class AlignmentUtils
           Collection<String> types, List<SequenceI> forSequences,
           boolean anyType, boolean doShow)
   {
-    for (AlignmentAnnotation aa : al.getAlignmentAnnotation())
+    AlignmentAnnotation[] anns = al.getAlignmentAnnotation();
+    if (anns != null)
     {
-      if (anyType || types.contains(aa.label))
+      for (AlignmentAnnotation aa : anns)
       {
-        if ((aa.sequenceRef != null)
-                && (forSequences == null || forSequences
-                        .contains(aa.sequenceRef)))
+        if (anyType || types.contains(aa.label))
         {
-          aa.visible = doShow;
+          if ((aa.sequenceRef != null)
+                  && (forSequences == null || forSequences
+                          .contains(aa.sequenceRef)))
+          {
+            aa.visible = doShow;
+          }
         }
       }
     }