idea使用问题手册

一

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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

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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