White spaces are required between publicId and systemId

Dom parser give below expection while parsing xml file in which public id exit but system id not exit. for example

**<!DOCTYPE SPIN PUBLIC "-//AIP//DTD aipspin//EN"&gt <root&gt ... </root> **

org.xml.sax.SAXParseException: White spaces are required between publicId and systemId. at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:249) at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:284) at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:180) at com.main.parse.main(parse.java:77)