使用java命令出现Error: A JNI error has occurred, please check your installation and try again的错误...

运行Java程序，javac运行.java文件没有报错，但java运行的时候报错 ​​​ 仔细看一下报错 Exception in thread "main" java.lang.UnsupportedClassVersionError: helloworld has been compiled by a more recent version of the Java Runtime (class

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