java运行出现JNI错误，JDK8和JDK11都安装了

柔情只为你懂 2022-12-07 12:04 197阅读 0赞

### java运行出现JNI错误，JDK8和JDK11都安装了 ###

*   *  1. 问题描述
     *  2. 尝试办法
     *  3. 解决办法
     *   *   *  3.1 解决方法：
             *  3.2 测试结果成功

## 1. 问题描述 ##

因为编程的需要，所以我安装了JDK8和JDK11，在安装好了之后配置好了环境变量，之后打开Eclipse的时候，却发现一个HelloWorld都没有办法运行了，出现如下的报错：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNzA0NDE1_size_16_color_FFFFFF_t_70_pic_center]

Exception in thread "main" java.lang.UnsupportedClassVersionError: king/HelloWorld has been compiled by a more recent version of the Java Runtime (class file version 54.0), 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(ClassLoader.java:756)
    	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    	at java.net.URLClassLoader.defineClass(URLClassLoader.java:468)
    	at java.net.URLClassLoader.access$100(URLClassLoader.java:74)
    	at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
    	at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
    	at java.security.AccessController.doPrivileged(Native Method)
    	at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
    	at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
    	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355)
    	at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
    	at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:601)

## 2. 尝试办法 ##

*  使用命令行编译也是不行  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNzA0NDE1_size_16_color_FFFFFF_t_70_pic_center 1]
 *  检查了我的版本之后发现环境变量是没有错误的：  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNzA0NDE1_size_16_color_FFFFFF_t_70_pic_center 2]

## 3. 解决办法 ##

*  看报错的信息是编译器的版本有冲突  
    king/HelloWorld has been compiled by a more recent version of the Java Runtime (class file version 54.0), this version of the Java Runtime only recognizes class file versions up to 52.0  
    于是就开始查资料

#### 3.1 解决方法： ####

Project右键->Properties->Java Compiler->Configure Workspace Setting  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNzA0NDE1_size_16_color_FFFFFF_t_70_pic_center 3]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNzA0NDE1_size_16_color_FFFFFF_t_70_pic_center 4]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNzA0NDE1_size_16_color_FFFFFF_t_70_pic_center 5]

#### 3.2 测试结果成功 ####

*  终于好了，我的HelloWorld测试出来了

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNzA0NDE1_size_16_color_FFFFFF_t_70_pic_center 6]

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