When looking at a JBossAS bootstrap, I'm seeing a few of these when I do random thread dumps. | "main" prio=1 tid=0x09547230 nid=0x16f1 runnable [0x805db000..0x805dce30] | at java.lang.System.arraycopy(Native Method) | at java.util.ArrayList.toArray(ArrayList.java:304) | at org.jboss.virtual.plugins.vfs.helpers.PathTokenizer.getTokens(PathTokenizer.java:145) | at org.jboss.virtual.plugins.context.AbstractVirtualFileHandler.structuredFindChild(AbstractVirtualFileHandler.java:413) | at org.jboss.virtual.plugins.context.zip.ZipEntryHandler.getChild(ZipEntryHandler.java:134) | at org.jboss.virtual.plugins.context.DelegatingHandler.getChild(DelegatingHandler.java:101) | at org.jboss.virtual.VirtualFile.getChild(VirtualFile.java:405) | Since PathTokenizer is only used internally, is there any reason why it can't just return the List<String> instead of copying arrays all over the place? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4157718#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...