Fixed serialization of IAtom's with null formal charge to not cause N…

…ullPointerExceptions Signed-off-by: Rajarshi Guha <rajarshi.guha@gmail.com>
egonw · Jun 5, 2009 · acc8012 · acc8012
1 parent df57aea
commit acc8012
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/main/org/openscience/cdk/io/MDLWriter.java b/src/main/org/openscience/cdk/io/MDLWriter.java
@@ -310,8 +310,8 @@ public void writeMolecule(IAtomContainer container) throws Exception {
         // write formal atomic charges
         for (int i = 0; i < container.getAtomCount(); i++) {
         	IAtom atom = container.getAtom(i);
-            int charge = atom.getFormalCharge();
-            if (charge != 0) {
+            Integer charge = atom.getFormalCharge();
+            if (charge != null && charge != 0) {
                 writer.write("M  CHG  1 ");
                 writer.write(formatMDLInt(i+1,3));
                 writer.write(" ");