一
[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-p1SRW10l-1596771695076)(E:\尚硅谷\2_每日笔记\idea使用问题手册.assets\image-20200630154050214.png)]
在homework包下运行没问题,在java.student包下运行出错
代码
package java.student;
import java.util.Scanner;
/**
* @author zhanghuohuo
* @create 2020-06-30 15:09
*/
public class OOP {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
//创建对象
Student student = new Student();
student.name = "张火火";
student.age = 24;
student.major = "计算机科学与技术";
student.interests = "数码";
System.out.println();
}
}
class Student {
String name;//学生姓名
int age;//年龄
String major;//专业
String interests;//兴趣
public void say() {
System.out.println("学生姓名:" + name);
System.out.println("学生年龄:" + age);
System.out.println("学生专业:" + major);
System.out.println("学生兴趣:" + interests);
}
}
错误提示
java.lang.SecurityException: Prohibited package name: java.student
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:335)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:495)
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main"
Process finished with exit code 1
==异常原因
控制台命令
[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-Dh7CMKNs-1596771695080)(E:\尚硅谷\2_每日笔记\idea使用问题手册.assets\image-20200712100619782.png)]
[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-DkEpYH5m-1596771695081)(E:\尚硅谷\2_每日笔记\idea使用问题手册.assets\image-20200712100640875.png)]
idea和maven兼容问题
idea19.2.2不兼容 maven3.6.3 可能只兼容maven3.6.1以下
95081)]
idea和maven兼容问题
idea19.2.2不兼容 maven3.6.3 可能只兼容maven3.6.1以下