title: class "javax.persistence.TypedQuery"'s signer information does not match signer information of other classes in the same package
body: <p><strong>I came to know that this error comes when a class is being loaded from two different jars. but in my case how to know list of JAR containing "javax.persistence.TypedQuery" class, so that I can remove one of them to solve the issue.</strong></p>
  
  <pre><code>java.lang.SecurityException: class "javax.persistence.TypedQuery"'s signer information does not match signer information of other classes in the same package**
          at java.lang.ClassLoader.checkCerts(Unknown Source)
          at java.lang.ClassLoader.preDefineClass(Unknown Source)
          at java.lang.ClassLoader.defineClass(Unknown Source)
          at java.security.SecureClassLoader.defineClass(Unknown Source)
          at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2957)
          at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1210)
          at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1690)
          at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
          at java.lang.ClassLoader.defineClass1(Native Method)
          at java.lang.ClassLoader.defineClass(Unknown Source)
          at java.security.SecureClassLoader.defineClass(Unknown Source)
          at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2957)
          at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1210)
          at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1690)
          at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
          at java.lang.Class.getDeclaredMethods0(Native Method)
          at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
          at java.lang.Class.getDeclaredMethods(Unknown Source)
          at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:571)
          at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:488)
          at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:474)
          at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.java:241)
          at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineConstructorsFromBeanPostProcessors(AbstractAutowireCapableBeanFactory.java:1065)
          at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1038)
          at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)
          at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
          at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
          at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
          at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
          at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
          at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755)
          at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
          at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
          at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:663)
          at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:629)
          at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:677)
          at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:548)
          at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:489)
          at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
          at javax.servlet.GenericServlet.init(GenericServlet.java:158)
          at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1284)
          at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1197)
          at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1087)
          at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5266)
          at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5554)
          at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
          at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1575)
          at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1565)
          at java.util.concurrent.FutureTask.run(Unknown Source)
          at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
          at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
          at java.lang.Thread.run(Unknown Source)
      Dec 05, 2017 1:41:29 PM org.apache.catalina.core.StandardContext loadOnStartup**
  </code></pre>