Question

Exception in thread "main" java.lang.SecurityException: Prohibited package name: java
    at java.base/java.lang.ClassLoader.preDefineClass(ClassLoader.java:889)
    at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1005)
    at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:174)
    at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:801)
    at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:699)
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:622)
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:580)
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:185)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496)
    at java.base/java.lang.Class.forName0(Native Method)
    at java.base/java.lang.Class.forName(Class.java:375)
    at java.base/sun.launcher.LauncherHelper.loadMainClass(LauncherHelper.java:654)
    at java.base/sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:551)

Answer 1

更改您的包裹名称。

You can't have java as a package name as it's prohibited.

所以如果你有这个：

package java; 

public class Helloworld { 

    public static void main(String[] args) { 
        int a = 10; 
        int b = 20; 
        System.out.println(a + b); 
    } 
}

例如，它需要是这样的：

package mypackagenamethatisnotthewordjava; 

public class Helloworld { 

    public static void main(String[] args) { 
        int a = 10; 
        int b = 20; 
        System.out.println(a + b); 
    } 
}

还要确保重命名代码所在的文件夹以匹配类中声明的包名称。

如何处理：'发生了JNi错误，检查安装并再试一次'？

1 个答案: