通过System.getProperties()获取系统参数
Properties props=System.getProperties(); //系统属性
System.out.println("Java的运行环境版本:"+props.getProperty("java.version"));
System.out.println("Java的运行环境供应商:"+props.getProperty("java.vendor"));
System.out.println("Java供应商的URL:"+props.getProperty("java.vendor.url"));
System.out.println("Java的安装路径:"+props.getProperty("java.home"));
System.out.println("Java的虚拟机规范版本:"+props.getProperty("java.vm.specification.version"));
System.out.println("Java的虚拟机规范供应商:"+props.getProperty("java.vm.specification.vendor"));
System.out.println("Java的虚拟机规范名称:"+props.getProperty("java.vm.specification.name"));
System.out.println("Java的虚拟机实现版本:"+props.getProperty("java.vm.version"));
System.out.println("Java的虚拟机实现供应商:"+props.getProperty("java.vm.vendor"));
System.out.println("Java的虚拟机实现名称:"+props.getProperty("java.vm.name"));
System.out.println("Java运行时环境规范版本:"+props.getProperty("java.specification.version"));
System.out.println("Java运行时环境规范供应商:"+props.getProperty("java.specification.vender"));
System.out.println("Java运行时环境规范名称:"+props.getProperty("java.specification.name"));
System.out.println("Java的类格式版本号:"+props.getProperty("java.class.version"));
System.out.println("Java的类路径:"+props.getProperty("java.class.path"));
System.out.println("加载库时搜索的路径列表:"+props.getProperty("java.library.path"));
System.out.println("默认的临时文件路径:"+props.getProperty("java.io.tmpdir"));
System.out.println("一个或多个扩展目录的路径:"+props.getProperty("java.ext.dirs"));
System.out.println("操作系统的名称:"+props.getProperty("os.name"));
System.out.println("操作系统的构架:"+props.getProperty("os.arch"));
System.out.println("操作系统的版本:"+props.getProperty("os.version"));
System.out.println("文件分隔符:"+props.getProperty("file.separator")); //在 unix 系统中是"/"
System.out.println("路径分隔符:"+props.getProperty("path.separator")); //在 unix 系统中是":"
System.out.println("行分隔符:"+props.getProperty("line.separator")); //在 unix 系统中是"/n"
System.out.println("用户的账户名称:"+props.getProperty("user.name"));
System.out.println("用户的主目录:"+props.getProperty("user.home"));
System.out.println("用户的当前工作目录:"+props.getProperty("user.dir"));
Java的运行环境版本:1.7.0_80
Java的运行环境供应商:Oracle Corporation
Java供应商的URL:http://java.oracle.com/
Java的安装路径:D:\jdk\jre
Java的虚拟机规范版本:1.7
Java的虚拟机规范供应商:Oracle Corporation
Java的虚拟机规范名称:Java Virtual Machine Specification
Java的虚拟机实现版本:24.80-b11
Java的虚拟机实现供应商:Oracle Corporation
Java的虚拟机实现名称:Java HotSpot(TM) 64-Bit Server VM
Java运行时环境规范版本:1.7
Java运行时环境规范供应商:null
Java运行时环境规范名称:Java Platform API Specification
Java的类格式版本号:51.0
Java的类路径:D:\eclisework\Test2\build\classes;D:\apache-tomcat-7.0.47\apache-tomcat-7.0.47\lib\annotations-api.jar;D:\apache-tomcat-7.0.47\apache-tomcat-7.0.47\lib\catalina-ant.jar;D:\apache-tomcat-7.0.47\apache-tomcat-7.0.47\lib\catalina-ha.jar;D:\apache-tomcat-7.0.47\apache-tomcat-7.0.47\lib\catalina-tribes.jar;D:\apache-tomcat-7.0.47\apache-tomcat-7.0.47\lib\catalina.jar;D:\apache-tomcat-7.0.47\apache-tomcat-7.0.47\lib\ecj-4.2.2.jar;D:\apache-tomcat-7.0.47\apache-tomcat-7.0.47\lib\el-api.jar;D:\apache-tomcat-7.0.47\apache-tomcat-7.0.47\lib\jasper-el.jar;D:\apache-tomcat-7.0.47\apache-tomcat-7.0.47\lib\jasper.jar;D:\apache-tomcat-7.0.47\apache-tomcat-7.0.47\lib\jsp-api.jar;D:\apache-tomcat-7.0.47\apache-tomcat-7.0.47\lib\servlet-api.jar;D:\apache-tomcat-7.0.47\apache-tomcat-7.0.47\lib\tomcat-api.jar;D:\apache-tomcat-7.0.47\apache-tomcat-7.0.47\lib\tomcat-coyote.jar;D:\apache-tomcat-7.0.47\apache-tomcat-7.0.47\lib\tomcat-dbcp.jar;D:\apache-tomcat-7.0.47\apache-tomcat-7.0.47\lib\tomcat-i18n-es.jar;D:\apache-tomcat-7.0.47\apache-tomcat-7.0.47\lib\tomcat-i18n-fr.jar;D:\apache-tomcat-7.0.47\apache-tomcat-7.0.47\lib\tomcat-i18n-ja.jar;D:\apache-tomcat-7.0.47\apache-tomcat-7.0.47\lib\tomcat-jdbc.jar;D:\apache-tomcat-7.0.47\apache-tomcat-7.0.47\lib\tomcat-util.jar;D:\apache-tomcat-7.0.47\apache-tomcat-7.0.47\lib\tomcat7-websocket.jar;D:\apache-tomcat-7.0.47\apache-tomcat-7.0.47\lib\websocket-api.jar
加载库时搜索的路径列表:D:\jdk\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;D:/jdk/bin/../jre/bin/server;D:/jdk/bin/../jre/bin;D:/jdk/bin/../jre/lib/amd64;D:\apache-maven-3.3.9\bin;D:\jdk\bin;D:\jdk\jre\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\TortoiseSVN\bin;C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static;C:\Program Files (x86)\MySQL\MySQL Server 5.5\bin;D:\tools\gradle-2.4\bin;C:\oracle\Ora10InstantClient;D:\eclise;;.
默认的临时文件路径:C:\Users\ADMINI~1\AppData\Local\Temp\
一个或多个扩展目录的路径:D:\jdk\jre\lib\ext;C:\Windows\Sun\Java\lib\ext
操作系统的名称:Windows 7
操作系统的构架:amd64
操作系统的版本:6.1
文件分隔符:\
路径分隔符:;
行分隔符:
用户的账户名称:Administrator
用户的主目录:C:\Users\Administrator
用户的当前工作目录:D:\eclisework\Test2