at (Unknown Source)
at sun.nio.cs.StreamDecoder$ConverterSD.convertInto(Unknown Source)
at sun.nio.cs.StreamDecoder$ConverterSD.implRead(Unknown Source)
at sun.nio.cs.StreamDecoder.read(Unknown Source)
at (Unknown Source)
at org.apache.xerces.impl.XMLEntityManager$EntityScanner.load(XMLEntityManager.java:3186)
at org.apache.xerces.impl.XMLEntityManager$EntityScanner.skipString(XMLEntityManager.java:2948)
at org.apache.xerces.impl.XMLDocumentScannerImpl$XMLDeclDispatcher.dispatch(XMLDocumentScannerImpl.java:563)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:333)
at org.apache.xerces.parsers.StandardParserConfiguration.parse(StandardParserConfiguration.java:529)
at org.apache.xerces.parsers.StandardParserConfiguration.parse(StandardParserConfiguration.java:585)
at org.apache.xerces.parsers.XMLParser.parse(XMLParser.java:147)
at org.apache.xerces.parsers.DOMParser.parse(DOMParser.java:221)
at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:201)
at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.getDomDocument(ProductInfoUtils.java:481)
at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.parseFile(ProductInfoUtils.java:403)
at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.parseAllFiles(ProductInfoUtils.java:460)
at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.pathChanged(ProductInfoUtils.java:342)
at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.<init>(ProductInfoUtils.java:288)
at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.getAllProductsInfo(ProductInfoUtils.java:966)
at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.<clinit>(ProductInfoUtils.java:274)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at com.mathworks.mde.desk.StartupClassLoader$LoadInfo.<init>(StartupClassLoader.java:76)
at com.mathworks.mde.desk.StartupClassLoader.addLoadInfo(StartupClassLoader.java:210)
at com.mathworks.mde.desk.StartupClassLoader.createLoadInfos(StartupClassLoader.java:186)
at com.mathworks.mde.desk.StartupClassLoader.access$400(StartupClassLoader.java:24)
at com.mathworks.mde.desk.StartupClassLoader$2.run(StartupClassLoader.java:138)
at java.util.TimerThread.mainLoop(Unknown Source)
at java.util.TimerThread.run(Unknown Source)


请问各位高手 怎么去掉这些异常？

感觉好像是启动程序在调用JAVA类的时候出了问题使界面打不开，猜的，俺也不知该怎搞，帮你顶啊！

应该重启软件或电脑就没事了哇。