Java开发网 - Thread safe problem

Java开发网

您没有登录

» Java开发网 » Java SE 综合讨论区

打印话题 寄给朋友 订阅主题

作者

Thread safe problem

iany

发贴: 3
积分: 0

于 2004-07-23 05:14

Given
11 public class Acct extends HttpServlet {
12  public StringBuffer foo = new StringBuffer("foo");
13  public void doPost(HttpServletRequest req,
      HttpServletResponse resp){
14  ServletConfig config = getServletConfig();
15  String param1 = config.getInitParameter("param1");
16  ServletContext context = getServletContext();
17  Object obj = context.getAttribute("OBJ");
}
}
Which two variables reference objects that are thread-safe?(Choose two)
A obj at line 17
B foo at line 12
C config at line 14
D param1 at line 15
E context in line 16
Answer C D
Why E is incorrect?

• 一个程序员的奋斗历程

话题树型展开

人气	标题	作者	字数	发贴时间
6779	Thread safe problem	iany	592	2004-07-23 05:14
5259	Re:Thread safe problem	yftsang2	231	2004-07-24 16:19
5331	Re:Thread safe problem	iany	170	2004-07-25 17:54
5926	Re:Thread safe problem	javaguan2	77	2004-08-20 13:01

已读帖子

新的帖子

被删除的帖子