调用 TimeZone.getAvailableIDs() 时出现 NullPointerException [英] NullPointerException when calling TimeZone.getAvailableIDs()

问题描述

我尝试了很多我基本上做的代码示例

I tried many examples of code where i do basically

String[] IDs = java.util.TimeZone.getAvailableIDs();

它不起作用.我还尝试了另一帧示例代码，即 this 并返回:

and it doesn't work. I've also tried another frame of example code, i.e. this and it returns:

at sun.util.calendar.ZoneInfoFile.getZoneIDs(ZoneInfoFile.java:785)
at sun.util.calendar.ZoneInfo.getAvailableIDs(ZoneInfo.java:560)
at java.util.TimeZone.getAvailableIDs(TimeZone.java:508)
at TimeZoneDemo.main(uu.java:6)

我也尝试重新安装 JRE 和 JDK，但错误仍然存​​在.那么有什么意义呢?当我尝试执行 String[] eg = {"one","two"}; 时，它可以工作.

I tried also to reinstall the JRE and JDK, but the error persists. So what's the point? When I try to do String[] eg = {"one","two"}; it works.

推荐答案

你会在这里发现同样的问题:

You'll find the same problem here:

• http://www.eclipse.org/forums/index.php/m/532341/

https://jira.atlassian.com/browse/FE-2662

http://bugs.sun.com/view_bug.do?bug_id=6529213

建议:

下载并运行最新的tzupdater工具，看看是否能解决问题:

Download and run the latest tzupdater tool, and see if it resolves the problem:

• http://www.oracle.com/technetwork/java/javase/tzupdater-readme-136440.html

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