testsocketpermission.java

本书是一本为Java学习者在基础内容学习结束后进行课程设计时提供参考的指导书

package apibook.c5.s1;

import java.net.*;
import java.io.IOException;
import java.security.AccessController;

//测试SocketPermission类
public class TestSocketPermission {
  public TestSocketPermission() {
  }
  public static void main(String[] args) {
    SocketPermission fp = new SocketPermission("www.163.com", "connect");
    try {
        AccessController.checkPermission(fp);
        System.out.println(InetAddress.getByName("www.163.com"));
        Socket socket = new Socket("www.163.com", 80);
        socket.close();
    } catch (IOException e) {
        e.printStackTrace();
    } catch (SecurityException e) {
        e.printStackTrace();
    }

  }

}