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[java] vm property and getenv

2009-06-30 19:59:19| 分类： lang_java | 标签： |举报 |字号大中小订阅

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class System {
   static Map<String,String> getenv();
   static String getenv(String name);

   static Properties getProperties();
   static String getProperty(String key);
}

getenv() 用于获取环境变量，而 getProperty() 则是获取 java vm 的一些属性/状态，比如：
os.name=FreeBSD
java.awt.printerjob=sun.print.PSPrinterJob

我们可以通过 java vm property 来进行项目配置。
<1> java your_app
<2> read config file (.xml/.ini)
<3> load default config, change what defined in contig file
<4> set config to System.setProperty()
然后项目的其他地方，就可以很方便的 getProperty() 获得设置。

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