[Php-java-bridge-users] Problem running with Ubuntu

Hi,

I'm using Tomcat private instance on Ubuntu.  I have set up the bridge 
and can run the index and test programs.  I then insert a simple java 
jar program in the WEB-INF/lib as I step through a simple program when I 
call in php

require_once("java/Java.inc");
             $session = java_session();
             if(java_is_null($instName = $session->get("bean"))) {
               $session->put("bean", $instName=new Java("DoSimple"));
             }else {
               $session->put("bean", $instName=new Java("testString", 
"Test of Bridge"));
             }
             $rawInstNameA = java_values($instName->testAnArray($yrqtr));

against the simple java program:
public class DoSimple {
     public DoSimple(){
     }
     public void testString(String s3){
         System.out.println(s3);

     }
}

The Bridge fails in the call to the constructor:

The error output is:

Cause: 
[[o:UnsupportedClassVersionError]:"java.lang.UnsupportedClassVersionError: 
DoSimple : Unsupported major.minor version 52.0 (unable to load class 
DoSimple)" at: #-12 
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2948) 
#-11 
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1208) 
#-10 
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1688) 
#-9 
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1569) 
#-8 java.lang.Class.forName0(Native Method) #-7 
java.lang.Class.forName(Class.java:274) #-6 
php.java.bridge.Util.classForName(Util.java:1518) #-5 
php.java.bridge.JavaBridge.CreateObject(JavaBridge.java:445) #-4 
php.java.bridge.Request.handleRequest(Request.java:458) #-3 
php.java.bridge.Request.handleRequests(Request.java:500) #-2 
php.java.bridge.http.ContextRunner.run(ContextRunner.java:145) #-1 
php.java.bridge.ThreadPool$Delegate.run(ThreadPool.java:60) #0 
/home/don/donTomcat/webapps/Financials2/java/Java.inc(232): 
java_ExceptionProxyFactory->getProxy(4, 'java.lang.Unsup...', 'T', true) 
#1 /home/don/donTomcat/webapps/Financials2/java/Java.inc(360): 
java_Arg->getResult(true) #2 
/home/don/donTomcat/webapps/Financials2/java/Java.inc(366): 
java_Client->getWrappedResult(true) #3 
/home/don/donTomcat/webapps/Financials2/java/Java.inc(560): 
java_Client->getResult() #4 
/home/don/donTomcat/webapps/Financials2/java/Java.inc(1752): 
java_Client->invokeMethod(3, 'getCause', Array) #5 
/home/don/donTomcat/webapps/Financials2/java/Java.inc(2062): 
java_JavaProxy->__call('getCause', Array) #6 
/home/don/donTomcat/webapps/Financials2/CallJava.php(26): 
java_exception->__call('getCause', Array) #7 
/home/don/donTomcat/webapps/Financials2/CallJava.php(26): 
java_InternalException->getCause() #8 {main}]

It can't load the class.   I can't see why.  Can anyone help?  If there 
is any other information that will help, I will gladly send it.

Thanks
Don