[java] org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/CollegeWebsite]]

This error happens because of your Jre version of Eclipse and Tomcat are mismatched ..either change eclipse one to tomcat one or ViceVersa..

Both should be same ..Java version mismatched ..Check it

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ERROR Source option 1.5 is no longer supported. Use 1.6 or later Java 6 Unsupported major.minor version 51.0 Maven Installation OSX Error Unsupported major.minor version 51.0 Unsupported major.minor version 52.0 org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/CollegeWebsite]] java.lang.UnsupportedClassVersionError java.lang.UnsupportedClassVersionError Unsupported major.minor version 51.0 How to fix java.lang.UnsupportedClassVersionError: Unsupported major.minor version Exception in thread "main" java.lang.UnsupportedClassVersionError: a (Unsupported major.minor version 51.0)