/* * 设置指定键对值的系统属性 * setProperty (String prop, String value); * * 参数: * prop - 系统属性的名称。 * value - 系统属性的值。 * * 返回: * 系统属性以前的值,如果没有以前的值,则返回 null。 * * 抛出: * SecurityException - 如果安全管理器存在并且其 checkPermission 方法不允许设置指定属性。 * NullPointerException - 如果 key 或 value 为 null。 * IllegalArgumentException - 如果 key 为空。 * 注:这里的system,系统指的是 JRE (runtime)system,不是指 OS。 * */ System.setProperty("Property1", "abc"); System.setProperty("Property2","def");
这样就把第一个参数设置成为系统的全局变量!可以在项目的任何一个地方,通过System.getProperty("变量");来获得。
System.setProperty 相当于一个静态变量 ,存在内存里面!
http://www.cnblogs.com/chasewade/p/3387390.html
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