adding a warning message

andreasprlic · andreasprlic · commit 301876b60a35 · 2013-04-24T16:03:15.000-07:00
diff --git a/biojava3-structure/src/main/java/org/biojava/bio/structure/align/util/AFPAlignmentDisplay.java b/biojava3-structure/src/main/java/org/biojava/bio/structure/align/util/AFPAlignmentDisplay.java
@@ -346,6 +346,7 @@ public static Map<String,Double> calcIdSimilarity(char[] seq1, char[] seq2, int
 		double similarity = 0.0;
 		
 		if ( seq1 == null || seq2 == null){
+			System.err.println("AFPAlignmentDisplay can't calc ID if alignment strings are null! ");
 			Map<String, Double> m = new HashMap<String, Double>();
 			m.put("similarity", similarity);
 			m.put("identity", identity);
