Java写HelloWorld时出现JNI Error 求大神帮忙解决

[北方的狼_]

d:\JAVA\LM\2019_4_10>java helloworld
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.UnsupportedClassVersionError: helloworld has been compiled by a more recent version of the Java Runtime (class file version 56.0), this version of the Java Runtime only recognizes class file versions up to 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 sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)


之前有说是环境变量出问题 但是我改了环境变量好像也是这样

我的java装在D:\JAVA\jdk-12

class path .;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar;

path 里面包含 %JAVA_HOME%\bin 和 %JAVA_HOME%\jre\bin

[大隐藏于寺]

你用JDK 12环境编译,在JDK 8环境运行,高版本编译,低版本运行是不行的.建议统一下编译和运行环境试试.

[十八道胡同]

helloworld has been compiled by a more recent version of the Java Runtime (class file version 56.0), this version of the Java Runtime only recognizes class file versions up to 52.0 这句话写的很清晰，你的helloword是 56.0版本编译的，但是你的jre是52版本。 版本不兼容

[李老板的水果店]

请问该怎么解决呢

[~陌颜-]

卸载旧版本的JDK就行了