【错误笔记】IO流 - jdk不同版本问题
错误记录 - IO流出现Error: A JNI error has occurred, please check your installation and try again Exception in thread "main"源代码File file = new File("hello.txt");System.out.println(file.getAbsoluteFile());File
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错误记录 - IO流出现
Error: A JNI error has occurred, please check your installation and try again Exception in thread "main"
源代码
File file = new File("hello.txt");
System.out.println(file.getAbsoluteFile());
File file1 = new File("File\\hello.txt");
System.out.println(file1.getAbsoluteFile());
错误
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.SecurityException: Prohibited package name: java.File
at java.base/java.lang.ClassLoader.preDefineClass(ClassLoader.java:898)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1014)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:151)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:802)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:700)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:623)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:415)
at java.base/sun.launcher.LauncherHelper.loadMainClass(LauncherHelper.java:760)
at java.base/sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:655)
原因: 更换JDK版本以后,忘记修改lib Path造成
解决:
- 输入windows+r
- cmd 进入命令行
- 输入javac -version
4.输入java -version
没发现版本问题
5. File - Project Structure - Modules
选中项目,选择Dependencies,调成你要的版本,然后把工程或者每个moudle下的target文件下的所有东西都删了,只留一个target
将项目内所写的模块(moudle)进行复制备份,然后删除项目,重启IDEA,重新建立项目,再将备份的代码依次复制到各个模块下,重新运行,即可解决问题。
结果:
参考:
https://blog.csdn.net/weixin_40921797/article/details/83001882
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