環(huán)境：MyEclipse2015+ActiveMQ5.11.1

使用不同版本的JDK，執(zhí)行java application時會出現(xiàn)不同的表現(xiàn)。

1、JDK版本為jdk1.5/J2SE-1.5

錯誤：

java.lang.UnsupportedClassVersionError: Bad version number in .class file at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:620) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124) at java.net.URLClassLoader.defineClass(URLClassLoader.java:260) at java.net.URLClassLoader.access100(URLClassLoader.java:56)atjava.net.URLClassLoader$100(URLClassLoader.java:56) at java.net.URLClassLoader$1.run(URLClassLoader.java:195) at java.security.AccessController.doPRivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319) Exception in thread “main”

2、JDK版本為：JavaSE-1.6

錯誤：

Exception in thread “main” java.lang.UnsupportedClassVersionError: org/apache/activemq/ActiveMQConnectionFactory : Unsupported major.minor version 51.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) at java.lang.ClassLoader.defineClass(ClassLoader.java:615) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) at java.net.URLClassLoader.access000(URLClassLoader.java:58)atjava.net.URLClassLoader$000(URLClassLoader.java:58) at java.net.URLClassLoader$1.run(URLClassLoader.java:197) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) at org.com.activemq1.Receiver.main(Receiver.java:25)

3、JDK版本：JavaSE-1.7

無錯誤。

4、JDK版本Jdk-1.4

session = connection.createSession(Boolean.FALSE, Session.AUTO_ACKNOWLEDGE);

在方法createSession中出現(xiàn)錯誤：

The method createSession(boolean, int) in the type Connection is not applicable for the arguments (Boolean, int)

最終結(jié)論：ActiveMQ5.11.1必須在JDK1.7以上版本才能使用。