JVM Charset.defaultCharset（）不返回预期的字符集(JVM Charset.defaultCharset() does not return the expected char

JVM Charset.defaultCharset（）不返回预期的字符集(JVM Charset.defaultCharset() does not return the expected charset)

我的操作系统是带有希伯来语语言环境的Windows 7，并在我的代码中使用Java 6。 我已将我的语言环境更改为英语（美国），并将显示语言更改为英语。 我重新启动了我的电脑，然后在我的java代码中尝试获取默认字符集，如下所示：

String str = Charset.defaultCharset().name();

结果，str设置为windows-1255 。 这意味着它仍然使用希伯来语作为默认字符集。 什么似乎是问题？

My OS is windows 7 with Hebrew locale and using Java 6 in my code. I've changed my locale to English(United States) and also the display language to English. I restarted my PC and then in my java code tried to get the default charset as follow:

String str = Charset.defaultCharset().name();

The result, str is set to windows-1255. Which means that it still using the Hebrew as the default charset. What seems to be the problem?

最满意答案

通过OpenJDK源代码， file.encoding和defaultCharset()在Windows上根据以下内容设置：

Java 6： GetUserDefaultLCID API函数，它对应于“区域和语言”控制面板小程序的“格式”选项卡上的“格式”选项。

Java 7： GetSystemDefaultLCID API函数，对应于“区域和语言”控制面板小程序的“管理”选项卡上的“非Unicode程序的语言”，除非您将sun.locale.formatasdefault Java系统属性设置为true ，这将恢复为Java 6的行为。

因此，对于Java 6，Format是要更改的设置。

Going by OpenJDK sources, file.encoding and thus defaultCharset() is set on Windows according to:

Java 6: GetUserDefaultLCID API function which corresponds to the Format option on the Formats tab of the Region and Language control panel applet.

Java 7: GetSystemDefaultLCID API function which corresponds to the "Language for non-Unicode programs" on the Administrative tab of the Region and Language control panel applet, unless you set the sun.locale.formatasdefault Java system property to true, which will revert to the Java 6 behavior.

So for Java 6 the Format is the setting to change.