fix potential NPE

JabRef · Jun 1, 2017 · 92c97f7 · 92c97f7
1 parent 5539a5e
commit 92c97f7
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/src/main/java/org/jabref/logic/pdf/PdfAnnotationImporter.java b/src/main/java/org/jabref/logic/pdf/PdfAnnotationImporter.java
@@ -67,7 +67,10 @@ public List<FileAnnotation> importAnnotations(final Path path) {
     }
 
     private boolean isSupportedAnnotationType(PDAnnotation annotation) {
-        if (annotation.getSubtype().equals("Link") || annotation.getSubtype().equals("Widget")) {
+        if (annotation.getSubtype() == null) {
+            return false;
+        }
+        if ("Link".equals(annotation.getSubtype()) || "Widget".equals(annotation.getSubtype())) {
             LOGGER.debug(annotation.getSubtype() + " is excluded from the supported file annotations");
             return false;
         }