java.lang.NoClassDefFoundError: org.springframework.core.CollectionFactory
   at java.lang.Class.initializeClass(libgcj.so.81)
   at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.<init>(DefaultSingletonBeanRegistry.java:86)
   at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.<init>(FactoryBeanRegistrySupport.java:40)
   at org.springframework.beans.factory.support.AbstractBeanFactory.<init>(AbstractBeanFactory.java:146)
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.<init>(AbstractAutowireCapableBeanFactory.java:140)
   at org.springframework.beans.factory.support.DefaultListableBeanFactory.<init>(DefaultListableBeanFactory.java:107)
   at org.springframework.context.support.GenericApplicationContext.<init>(GenericApplicationContext.java:99)
   at org.springframework.test.AbstractSingleSpringContextTests.createApplicationContext(AbstractSingleSpringContextTests.java:240)
   at org.springframework.test.AbstractSingleSpringContextTests.loadContextLocations(AbstractSingleSpringContextTests.java:212)
   at org.springframework.test.AbstractSingleSpringContextTests.loadContext(AbstractSingleSpringContextTests.java:187)
   at org.springframework.test.AbstractSpringContextTests.getContext(AbstractSpringContextTests.java:140)
   at org.springframework.test.AbstractSingleSpringContextTests.setUp(AbstractSingleSpringContextTests.java:100)
   at junit.framework.TestCase.runBare(TestCase.java:128)
   at org.springframework.test.ConditionalTestCase.runBare(ConditionalTestCase.java:76)
   at junit.framework.TestResult$1.protect(TestResult.java:106)
   at junit.framework.TestResult.runProtected(TestResult.java:124)
   at junit.framework.TestResult.run(TestResult.java:109)
   at junit.framework.TestCase.run(TestCase.java:120)
   at junit.framework.TestSuite.runTest(TestSuite.java:230)
   at junit.framework.TestSuite.run(TestSuite.java:225)
   at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)
   at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
Caused by: java.lang.ClassNotFoundException: edu.emory.mathcs.backport.java.util.concurrent.ConcurrentHashMap not found in gnu.gcj.runtime.SystemClassLoader{urls=[file:/home/enyo/Projects/Web/Java/Tutorial/bin/,file:/home/enyo/Projects/Web/Java/Tutorial/war/WEB-INF/lib/spring.jar,file:/home/enyo/Projects/Web/Java/Tutorial/war/WEB-INF/lib/spring-webmvc.jar,file:/home/enyo/Projects/Web/Java/spring-framework-2.5.1/lib/jakarta-commons/commons-logging.jar,file:/home/enyo/Projects/Web/Java/Tutorial/war/WEB-INF/lib/junit-3.8.2.jar,file:/home/enyo/Projects/Web/Java/Tutorial/war/WEB-INF/lib/jstl.jar,file:/home/enyo/Projects/Web/Java/Tutorial/war/WEB-INF/lib/standard.jar,file:/home/enyo/Projects/Web/Java/Tutorial/war/WEB-INF/lib/spring-test.jar,file:/usr/share/tomcat5.5/common/lib/servlet-api.jar,file:/home/enyo/local/bin/eclipse/configuration/org.eclipse.osgi/bundles/437/1/.cp/,file:/home/enyo/local/bin/eclipse/configuration/org.eclipse.osgi/bundles/405/1/.cp/], parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}
   at java.net.URLClassLoader.findClass(libgcj.so.81)
   at gnu.gcj.runtime.SystemClassLoader.findClass(libgcj.so.81)
   at java.lang.ClassLoader.loadClass(libgcj.so.81)
   at java.lang.ClassLoader.loadClass(libgcj.so.81)
   at java.lang.VMClassLoader.defineClass(libgcj.so.81)
   at java.lang.ClassLoader.defineClass(libgcj.so.81)
   at java.security.SecureClassLoader.defineClass(libgcj.so.81)
   at java.net.URLClassLoader.findClass(libgcj.so.81)
   at gnu.gcj.runtime.SystemClassLoader.findClass(libgcj.so.81)
   at java.lang.ClassLoader.loadClass(libgcj.so.81)
   at java.lang.ClassLoader.loadClass(libgcj.so.81)
   at java.lang.Class.forName(libgcj.so.81)
   at java.lang.Class.initializeClass(libgcj.so.81)
   ...25 more