我在启动任何java应用程序时遇到问题。例如，只需一个简单的命令：
java -version
打印：
Error occurred during initialization of VM
java.lang.ClassFormatError: Unknown constant tag 223 in class file java/util/concurrent/locks/Lock
at java.util.concurrent.ConcurrentHashMap.<clinit>(ConcurrentHashMap.java:1597)
at sun.util.locale.LocaleObjectCache.<init>(LocaleObjectCache.java:48)
at sun.util.locale.LocaleObjectCache.<init>(LocaleObjectCache.java:44)
at java.util.Locale$Cache.<init>(Locale.java:676)
at java.util.Locale$Cache.<init>(Locale.java:675)
at java.util.Locale.<clinit>(Locale.java:411)
at java.lang.String.toLowerCase(String.java:2524)
at java.net.URL.<init>(URL.java:377)
at java.net.URL.<init>(URL.java:302)
at java.net.URL.<init>(URL.java:325)
at sun.net.www.ParseUtil.fileToEncodedURL(ParseUtil.java:272)
at sun.misc.Launcher.getFileURL(Launcher.java:460)
at sun.misc.Launcher$ExtClassLoader.getExtURLs(Launcher.java:192)
at sun.misc.Launcher$ExtClassLoader.<init>(Launcher.java:164)
at sun.misc.Launcher$ExtClassLoader$1.run(Launcher.java:148)
at sun.misc.Launcher$ExtClassLoader$1.run(Launcher.java:142)
at java.security.AccessController.doPrivileged(Native Method)
at sun.misc.Launcher$ExtClassLoader.getExtClassLoader(Launcher.java:141)
at sun.misc.Launcher.<init>(Launcher.java:71)
at sun.misc.Launcher.<clinit>(Launcher.java:57)
at java.lang.ClassLoader.initSystemClassLoader(ClassLoader.java:1489)
at java.lang.ClassLoader.getSystemClassLoader(ClassLoader.java:1474)
在我安装Liferay之后，这种行为开始了，所以我认为可能会超出并发锁的一些限制，但我无法在此处搜索任何信息。
计算机重新启动解决了它，但我仍然想知道是什么导致了这种行为，如何在不重新启动的情况下解决它。
http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/locks/Lock.html的API文档对此都没有帮助。
关于系统：
sudo update-alternatives --config java
There are 2 choices for the alternative java (providing /usr/bin/java).
Selection Path Priority Status
------------------------------------------------------------
* 0 /usr/lib/jvm/java-7-oracle/jre/bin/java 1075 auto mode
1 /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java 1071 manual mode
2 /usr/lib/jvm/java-7-oracle/jre/bin/java 1075 manual mode