[ https://issues.jboss.org/browse/JBWS-4019?page=com.atlassian.jira.plugin.... ] R Searls commented on JBWS-4019: -------------------------------- I did some investigative testing of this using jbossws-cxf:1.3.0.Final; jdk1.8.0_72-b15 and tested against wildfly902. I used testcase modules/testsuite/shared-tests/src/test/java/org/jboss/test/ws/saaj/jbws3084/JBWS3084TestCase.java I added the following code {code:java} private String rlsTest() { StringBuffer sb = new StringBuffer(); sb.append("#TEST# "); try { Map<String, DataHandler> attachments = (Map<String, DataHandler>) context.getMessageContext().get( MessageContext.INBOUND_MESSAGE_ATTACHMENTS); //int i = attachments.size(); DataHandler dh = (DataHandler) attachments .values() .iterator() .next(); MimeMultipart mmp = new MimeMultipart(dh.getDataSource()); MimeMultipart mmp2 = new MimeMultipart(dh.getDataSource()); sb.append("##1##" + mmp.toString() + "##2##" +mmp2.toString()); return sb.toString(); } catch (Exception e) { e.printStackTrace(); sb.append(e.toString()); return sb.toString(); } } {code} to file modules/testsuite/shared-tests/src/test/java/org/jboss/test/ws/saaj/jbws3084/ServiceImpl.java I found that there was a java.lang.IndexOutOfBoundsException thrown on the next() method call in {code:java} DataHandler dh = (DataHandler) attachments .values() .iterator() .next(); {code} The returned string is: #TEST# java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 When I preceeded the above stmt with stmt {code:java} int i = attachments.size(); {code} the java.lang.IndexOutOfBoundsException never occurs and the code runs successfully. The returned string is: #TEST# ##1##javax.mail.internet.MimeMultipart@20833b56##2##javax.mail.internet.MimeMultipart(a)4b15aaba I preformed a further test that isolates the issue with this code. {code:java} java.util.Collection<DataHandler> cmap = attachments.values(); sb.append("after Collection; "); java.util.Iterator<DataHandler> it = cmap.iterator(); sb.append("after Iterator; "); DataHandler myDH = it.next(); sb.append("after next; "); {code} returned string is: #TEST# after Collection; after Iterator; java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 -- This message was sent by Atlassian JIRA (v7.2.3#72005)