Java -D参数

Java -D= set a system property 设置系统属性

ex. java -Dconfig=”d:/config/config.xml” Abc

在Abc类中可以通过System.getProperty(“config”);获得这个值。

Standard System Properties

Key Meaning “file.separator” Character that separates components of a file path. This is “/” on UNIX and “\” on Windows. “java.class.path” Path used to find directories and JAR archives containing class files. Elements of the class path are separated by a platform-specific character specified in the path.separator property. “java.home” Installation directory for Java Runtime Environment (JRE) “java.vendor” JRE vendor name “java.vendor.url” JRE vender URL “java.version” JRE version number “line.separator” Sequence used by operating system to separate lines in text files “os.arch” Operating system architecture “os.name” Operating system name “os.version” Operating system version “path.separator” Path separator character used in java.class.path “user.dir” User working directory “user.home” User home directory “user.name” User account name