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I tried launching Minecraft after installing a new version of Java 9.0.4, and then the launcher displays this error:

Exception in thread "main" java.lang.UnsupportedClassVersionError: com/mojang/util/QueueLogAppender : Unsupported major.minor version 52.0Exception in thread "main" java.lang.UnsupportedClassVersionError: com/mojang/util/QueueLogAppender : Unsupported major.minor version 52.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(Unknown Source) at java.security.SecureClassLoader.defineClass(Unknown Source) at java.net.URLClassLoader.defineClass(Unknown Source) at java.net.URLClassLoader.access$100(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at org.apache.logging.log4j.core.config.plugins.util.PluginRegistry.decodeCacheFiles(PluginRegistry.java:181) at org.apache.logging.log4j.core.config.plugins.util.PluginRegistry.loadFromMainClassLoader(PluginRegistry.java:119) at org.apache.logging.log4j.core.config.plugins.util.PluginManager.collectPlugins(PluginManager.java:132) at org.apache.logging.log4j.core.pattern.PatternParser.<init>(PatternParser.java:132) at org.apache.logging.log4j.core.pattern.PatternParser.<init>(PatternParser.java:113) at org.apache.logging.log4j.core.layout.PatternLayout.createPatternParser(PatternLayout.java:246) at org.apache.logging.log4j.core.layout.PatternLayout$SerializerBuilder.build(PatternLayout.java:375) at org.apache.logging.log4j.core.layout.PatternLayout.<init>(PatternLayout.java:128) at org.apache.logging.log4j.core.layout.PatternLayout.<init>(PatternLayout.java:58) at org.apache.logging.log4j.core.layout.PatternLayout$Builder.build(PatternLayout.java:652) at org.apache.logging.log4j.core.config.AbstractConfiguration.setToDefault(AbstractConfiguration.java:577) at org.apache.logging.log4j.core.config.DefaultConfiguration.<init>(DefaultConfiguration.java:47) at org.apache.logging.log4j.core.LoggerContext.<init>(LoggerContext.java:86) at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.createContext(ClassLoaderContextSelector.java:171) at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.locateContext(ClassLoaderContextSelector.java:145) at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:74) at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:227) at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:45) at org.apache.logging.log4j.LogManager.getContext(LogManager.java:174) at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:618) at net.minecraft.launchwrapper.LogWrapper.configureLogging(LogWrapper.java:14) at net.minecraft.launchwrapper.LogWrapper.log(LogWrapper.java:28) at net.minecraft.launchwrapper.Launch.launch(Launch.java:94) at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

PLEASE HELP!

Thanks, but it was not the 1.8 error but actually a path error, i solved, thanks!