如何设置java系统属性,以便每当我启动JVM而不将其添加到命令行参数时它都有效 [英] How to set a java system property so that it is effective whenever I start JVM without adding it to the command line arguments
问题描述
Java 1.7中的默认Locale从操作系统获得的方式发生了变化。有一些方法可以恢复旧的行为,例如通过在启动JVM实例时设置标志-Dsun.locale.formatasdefault = true。
There was a change in Java 1.7 in the way the default Locale is get from the OS. There are methods of restoring the old behaviour e.g. by setting the flag -Dsun.locale.formatasdefault=true when starting a JVM instance.
我想永久设置此标志,以便我不必指定每次启动JVM实例时,它都在命令行参数中。是否有文件或任何其他可能更改JVM的默认设置?类似于Eclipse.ini文件但是对于JVM本身?
I would like to set this flag permanently so that I don't have to specify it in command line arguments each time when I start a JVM instance. Is there a file or any other possibility to change the default settings for JVM? Something like the Eclipse.ini file but for the JVM itself?
推荐答案
您可以设置设置环境变量您的操作系统中有JAVA_TOOL_OPTIONS
。所有Java工具(java,javac,..)都将选择此变量并使用它。所以你可以,例如使用
You can set set environment variable JAVA_TOOL_OPTIONS
in your OS. All Java tools (java, javac, ..) will pick this variable up and use it. So you could e.g. use
SET JAVA_TOOL_OPTIONS=-Dsun.locale.formatasdefault=true
我使用它强制为每个JVM强制使用特定的语言环境。
I use this to force a specific locale for each JVM.
但这仅适用于通过Java工具启动应用程序的情况。如果它是例如从调用jvm DLL的C程序开始,这将不会被使用。
编辑:我刚测试了它,似乎JAVA_TOOLS_OPTIONS也被选中了DLL启动时(使用WinRun4J作为启动器的Swing应用程序验证)
I just tested it, and it seems JAVA_TOOLS_OPTIONS is also picked up when the DLLs are started (verified with a Swing application that uses WinRun4J as a launcher)
请参阅: http://docs.oracle.com/javase/7/docs/webnotes/tsg/TSG-VM /html/envvars.html
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