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java中的System.getProperty()和getenv()方法
Java system.getproperty(String name)获取系统属性
属性说明：
public class test{ public static void main(String[] args) { System.out.println("Java Runtime Environment version = " + System.getProperty("java.version")); System.out.println("Java Runtime Environment vendor = " + System.getProperty("java.vendor")); System.out.println("Java vendor URL = " + System.getProperty("java.vendor.url")); System.out.println("Java installation directory = " + System.getProperty("java.home")); System.out.println("Java Virtual Machine specification version = " + System.getProperty("java.vm.specification.version")); System.out.println("Java Runtime Environment specification version = " + System.getProperty("java.specification.version")); System.out.println("Java class format version number = " + System.getProperty("java.class.version")); System.out.println("Java class path = " + System.getProperty("java.class.path")); System.out.println("Operating system name = " + System.getProperty("os.name")); System.out.println("Operating system architecture = " + System.getProperty("os.arch")); System.out.println("File separator (‘/‘ on UNIX) = " + System.getProperty("file.separator")); System.out.println("User‘s account name = " + System.getProperty("user.name")); System.out.println("User‘s home directory = " + System.getProperty("user.home")); System.out.println("User‘s current working directory = " + System.getProperty("user.dir"));}
Java system.getenv(String name)获取环境变量
System.out.println(System.getenv("Java_Home"));
java中的System.getProperty()和getenv()方法
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