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Key Meaning
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"file.separator" File separator (e.g., "/")
"java.class.path" Java classpath
"java.class.version" Java class version number
"java.home" Java installation directory
"java.vendor" Java vendor-specific string
"java.vendor.url" Java vendor URL
"java.version" Java version number
"line.separator" Line separator
"os.arch" Operating system architecture
"os.name" Operating system name
"path.separator" Path separator (e.g., ":")
"user.dir" User‘s current working directory
"user.home" User home directory
"user.name" User account name
public static void main(String[] args) {
//System.out.println(System.getProperties());//获取搜索的属性
System.out.println(System.getProperty("os.name"));//获取属性中key为os.name的值
System.out.println(System.getProperty("os.arch"));//输出:amd64
System.out.println(System.getProperty("path.separator")); // 取得分号 ;
System.out.println(System.getProperty("file.separator"));//取得反斜杠: System.out.println(System.getProperty("line.separator"));//相当于\n
System.out.println(System.getProperty("user.dir")); //项目根路径
System.out.println(System.getProperty("user.home"));//输出:C:\Users\Administrator
System.out.println(System.getProperty("user.name"));//输出:Administrator
System.out.println(System.getProperty("java.version"));//java版本号
System.out.println(System.getProperty("java.home")); //jre目录
System.out.println(System.getProperty("java.vendor")); //输出:Sun Microsystems Inc.
System.out.println(System.getProperty("java.vendor.url"));//sun官网
System.out.println(System.getProperty("java.class.version"));//class版本号
System.out.println(System.getProperty("java.class.path"));//class路径
}
System.getProperties()对应的key/value列表
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原文地址：http://www.cnblogs.com/wujinsen/p/4514018.html
