X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fdatamodel%2FAlignment.java;h=5d1fc605e5339a83d29f620491c994125e974cf9;hb=2fc1013d3c126983a8d7d932671168e11cfab63d;hp=81046f14f6b65fe6401b2cdb72f7966a65d9cb0d;hpb=3ef44bef1f825d26977dedd1608469712a87fe15;p=jalview.git

diff --git a/src/jalview/datamodel/Alignment.java b/src/jalview/datamodel/Alignment.java
index 81046f1..5d1fc60 100755
--- a/src/jalview/datamodel/Alignment.java
+++ b/src/jalview/datamodel/Alignment.java
@@ -20,6 +20,10 @@
  */
 package jalview.datamodel;
 
+import jalview.analysis.AlignmentUtils;
+import jalview.io.FastaFile;
+import jalview.util.MessageManager;
+
 import java.util.ArrayList;
 import java.util.Enumeration;
 import java.util.HashSet;
@@ -30,10 +34,6 @@ import java.util.Map;
 import java.util.Set;
 import java.util.Vector;
 
-import jalview.analysis.AlignmentUtils;
-import jalview.io.FastaFile;
-import jalview.util.MessageManager;
-
 /**
  * Data structure to hold and manipulate a multiple sequence alignment
  */
@@ -1734,4 +1734,19 @@ public class Alignment implements AlignmentI
     }
     return names;
   }
+
+  @Override
+  public boolean hasValidSequence()
+  {
+    boolean hasValidSeq = false;
+    for (SequenceI seq : getSequences())
+    {
+      if ((seq.getEnd() - seq.getStart()) > 0)
+      {
+        hasValidSeq = true;
+        break;
+      }
+    }
+    return hasValidSeq;
+  }
 }