![]() ![]() I had no choice to but upgrade to Spring 4.x (not sure if 3.2 or above would have worked as I jumped straight to 4. : .keySet()Ljava/util/concurrent/ConcurrentHashMap$KeySetView Īt .ApplicationContext.getInitParameterNames(ApplicationContext.java:368)Īt .ApplicationContextFacade.getInitParameterNames(ApplicationContextFacade.java:367)Īt .(WebApplicationContextUtils.java:201)Īt .(AbstractRefreshableWebApplicationContext.java:163) private static final long serialVersionUID 1L Here the serialVersionUID represents the class version, and we should increment it if the current. ![]() ![]() I've run into the same issue and while many will say that Java 8 is completely backwards compatible with older versions of java, this turns out not to be true. If the issue in IntelliJ then do this in terminal (not in IntelliJ terminal)- 1.change the java version to appropriate (in my case using jdk 1.4 as issue was class file has wrong version 55.0, should be 52.0 ) 2. ![]()
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