System.getProperties()系統属性

import java.util.Properties;

public class EveryProperty {
public static void main(String[] args) {
Properties props = System.getProperties(); // 系统属性
System.out.println("Java的运行环境版本(java.version)：" + props.getProperty("java.version"));
System.out.println("Java的运行环境供应商(java.vendor)：" + props.getProperty("java.vendor"));
System.out.println("Java供应商的URL(java.vendor.url)：" + props.getProperty("java.vendor.url"));
System.out.println("Java的安装路径(java.home)：" + props.getProperty("java.home"));
System.out.println("Java的虚拟机规范版本(java.vm.specification.version)：" + props.getProperty("java.vm.specification.version"));
System.out.println("Java的虚拟机规范供应商(java.vm.specification.vendor)：" + props.getProperty("java.vm.specification.vendor"));
System.out.println("Java的虚拟机规范名称(java.vm.specification.name)：" + props.getProperty("java.vm.specification.name"));
System.out.println("Java的虚拟机实现版本(java.vm.version)：" + props.getProperty("java.vm.version"));
System.out.println("Java的虚拟机实现供应商(java.vm.vendor)：" + props.getProperty("java.vm.vendor"));
System.out.println("Java的虚拟机实现名称(java.vm.name)：" + props.getProperty("java.vm.name"));
System.out.println("Java运行时环境规范版本(java.specification.version)：" + props.getProperty("java.specification.version"));
System.out.println("Java运行时环境规范供应商(java.specification.vendor)：" + props.getProperty("java.specification.vendor"));
System.out.println("Java运行时环境规范名称(java.specification.name)：" + props.getProperty("java.specification.name"));
System.out.println("Java的类格式版本号(java.class.version)：" + props.getProperty("java.class.version"));
System.out.println("Java的类路径(java.class.path)：" + props.getProperty("java.class.path"));
System.out.println("加载库时搜索的路径列表(java.library.path)：" + props.getProperty("java.library.path"));
System.out.println("默认的临时文件路径(java.io.tmpdir)：" + props.getProperty("java.io.tmpdir"));
System.out.println("一个或多个扩展目录的路径(java.ext.dirs)：" + props.getProperty("java.ext.dirs"));
System.out.println("操作系统的名称(os.name)：" + props.getProperty("os.name"));
System.out.println("操作系统的构架(os.arch)：" + props.getProperty("os.arch"));
System.out.println("操作系统的版本(os.version)：" + props.getProperty("os.version"));
System.out.println("文件分隔符(file.separator)：" + props.getProperty("file.separator")); // 在unix系统中是＂／＂
System.out.println("路径分隔符(path.separator)：" + props.getProperty("path.separator")); // 在unix系统中是＂:＂
System.out.println("行分隔符(line.separator)：" + props.getProperty("line.separator")); // 在unix系统中是＂/n＂
System.out.println("用户的账户名称(user.name)：" + props.getProperty("user.name"));
System.out.println("用户的主目录(user.home)：" + props.getProperty("user.home"));
System.out.println("用户的当前工作目录(user.dir)：" + props.getProperty("user.dir"));
}
}


/* java.vm.info=mixed mode
java.awt.printerjob=sun.awt.windows.WPrinterJob
java.vendor.url.bug=http://bugreport.sun.com/bugreport/
java.runtime.version=1.8.0_31-b13
java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment
java.endorsed.dirs=D:\Program Files\Java1.8\jdk1.8.0_31\...
java.runtime.name=Java(TM) SE Runtime Environment
sun.arch.data.model=64
sun.java.command=com.java.second.Property
sun.boot.library.path=D:\Program Files\Java1.8\jdk1.8.0_31\...
sun.java.launcher=SUN_STANDARD
sun.os.patch.level=
sun.cpu.endian=little
sun.io.unicode.encoding=UnicodeLittle
sun.desktop=windows
sun.cpu.isalist=amd64
sun.jnu.encoding=GBK
sun.management.compiler=HotSpot 64-Bit Tiered Compilers
sun.boot.class.path=D:\Program Files\Java1.8\jdk1.8.0_31\...
file.encoding.pkg=sun.io
file.encoding=UTF-8
user.variant=
user.script=
user.country=CN
user.timezone=Asia/Shanghai
user.language=zh
awt.toolkit=sun.awt.windows.WToolkit*/