Bug fix no class

.gitignore

@@ -0,0 +1 @@
+target/

src/main/java/org/panda/resource/UniProtSequence.java

@@ -129,11 +129,23 @@ public String getSeqAround(String idOrName, int prefixLen, int suffixLen, int lo
 		 */
         int max = ((prefixLen > suffixLen ? prefixLen : suffixLen) * 2) + 1;
 
+        // max/2 is how many you want to left/right of central position
+        // if you want k to the right, and you are at the kth position or lesser, this is impossible
+        if(max/2 >= location){
+            return null;
+        }
+
+        /*
+        The call to getSeqAround takes the width as an argument. Consider, if the width/2 = k,
+        then there will be k amino acids to the left and to the right.
+         */
+
         // Will take an odd-length as argument, and return sequence of that length
         // centered around location
 
         String seq = getSeqAround(idOrName, location, max);
 
+
 		/*
 		This occurs, for example, when the location is at the beggining(or end) of the amino
 		acid sequence for the protein, such that there is not enough amino acids to left(or right)