Exception in thread "main" java.lang.SecurityException: Prohibited package name: java.test.list-优快云博客

本文探讨了Java中定义包名的规范，避免使用以java.开头的包名，展示了错误示例并解析了由此引发的安全异常。深入理解Java安全机制及正确包名实践。

原因：定义包时不能以java.的形式定义

测试代码如下:

package java.test.collection;

public class ArrayListTest {

	public static void main(String[] args) {

		System.out.println("test java package");
		
	}	
}

异常如下:

Exception in thread "main" java.lang.SecurityException: Prohibited package name: java.test.collection
	at java.lang.ClassLoader.preDefineClass(ClassLoader.java:662)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:761)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
	at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:495)