Java code to view all system Properties

what is a system attribute?

System Properties refer to the operating system configuration information and software information associated with the user program.

User Program-related property examples

• File.separator: File delimiter:"\" under the Windows environment, "/" under Linux environment;
• User.dir: The Current user program is located in the directory;
• Path.separator: The path delimiter for the current operating system ;
• Os.version: operating system version ;
• User.Name: User login name ;
• Os.name: operating system name ;
• Java.ext.dirs:The installation directory of the JDK ;
• Java.home:installation directory of Java real-time running environment ;
• User.home: user home directory ;

Java code View properties for all systems

publicclass SystemProperty {    publicstaticvoidmain(String args[]) {        Properties props = System.getProperties();        Iterator<Object> iter = props.keySet().iterator();        while (iter.hasNext()) {            String key = (String) iter.next();            " = " + props.get(key));        }    }}

The results of my native run

Java.runtime.name = Java (TM) SE Runtime Environment
Sun.boot.library.path = F:\myeclipse\Common\binary\com.sun.java.jdk.win32.x86_64_1.6.0.013\jre\bin
Java.vm.version = 11.3-B02
Java.vm.vendor = Sun Microsystems Inc.
Java.vendor.url = http://java.sun.com/
Path.separator =;
Java.vm.name = Java HotSpot (TM) 64-bit Server VM
File.encoding.pkg = Sun.io
Sun.java.launcher = Sun_standard
User.country = CN
Sun.os.patch.level = Service Pack 1
Java.vm.specification.name = Java Virtual Machine specification
User.dir = E:\hxlprogrammerpath\javapractise
Java.runtime.version = 1.6.0_13-b03
Java.awt.graphicsenv = Sun.awt.Win32GraphicsEnvironment
Java.endorsed.dirs = F:\myeclipse\Common\binary\com.sun.java.jdk.win32.x86_64_1.6.0.013\jre\lib\endorsed
Os.arch = AMD64
Java.io.tmpdir = C:\users\admini~1\appdata\local\temp\
Line.separator =

Java.vm.specification.vendor = Sun Microsystems Inc.
User.variant =
Os.name = Windows Vista
sun.jnu.encoding = GBK
Java.library.path = F:\myeclipse\Common\binary\com.sun.java.jdk.win32.x86_64_1.6.0.013\bin;.; C:\Windows\Sun\Java\bin; C:\Windows\system32; C:\windows;d:\quick; C:\oracle\ora81\bin;d:\my-study-material\maven\apache-maven-3.3.3\bin; E:\jdk\bin; F:\app\Administrator\product\11.2.0\dbhome_1\bin; C:\Windows\system32; C:\Windows; C:\Windows\System32\Wbem; C:\Windows\System32\WindowsPowerShell\v1.0\; C:\Program Files (x86) \ati Technologies\ati. ace\core-static; E:\mysql-advanced-5.6.20-winx64\bin; C:\Program Files\tortoisesvn\bin; E:\IBM_ROSE\common; E:\posix\mingw32\bin; F:\Vim\vim74
Java.specification.name = Java Platform API specification
Java.class.version = 50.0
Sun.management.compiler = HotSpot 64-bit Server compiler
Os.version = 6.1
User.home = C:\Users\Administrator
User.timezone =
Java.awt.printerjob = Sun.awt.windows.WPrinterJob
file.encoding = GBK
Java.specification.version = 1.6
Java.class.path = E:\hxlprogrammerpath\javapractise\bin; F:\myeclipse\Common\plugins\org.junit_4.8.2.v4_8_2_v20110321-1705\junit.jar; F:\myeclipse\Common\plugins\org.hamcrest.core_1.1.0.v20090501071000.jar; E:\hxlprogrammerpath\javapractise\lib\poi-3.11-20141221.jar
User.Name = Administrator
Java.vm.specification.version = 1.0
Java.home = F:\myeclipse\Common\binary\com.sun.java.jdk.win32.x86_64_1.6.0.013\jre
Sun.arch.data.model = 64
User.language = zh
Java.specification.vendor = Sun Microsystems Inc.
Awt.toolkit = Sun.awt.windows.WToolkit
Java.vm.info = Mixed Mode
Java.version = 1.6.0_13
Java.ext.dirs = F:\myeclipse\Common\binary\com.sun.java.jdk.win32.x86_64_1.6.0.013\jre\lib\ext; C:\Windows\Sun\Java\lib\ext
Sun.boot.class.path = F:\myeclipse\Common\binary\com.sun.java.jdk.win32.x86_64_1.6.0.013\jre\lib\resources.jar; F:\myeclipse\Common\binary\com.sun.java.jdk.win32.x86_64_1.6.0.013\jre\lib\rt.jar; F:\myeclipse\Common\binary\com.sun.java.jdk.win32.x86_64_1.6.0.013\jre\lib\sunrsasign.jar; F:\myeclipse\Common\binary\com.sun.java.jdk.win32.x86_64_1.6.0.013\jre\lib\jsse.jar; F:\myeclipse\Common\binary\com.sun.java.jdk.win32.x86_64_1.6.0.013\jre\lib\jce.jar; F:\myeclipse\Common\binary\com.sun.java.jdk.win32.x86_64_1.6.0.013\jre\lib\charsets.jar; F:\myeclipse\Common\binary\com.sun.java.jdk.win32.x86_64_1.6.0.013\jre\classes
Java.vendor = Sun Microsystems Inc.
File.separator = \
Java.vendor.url.bug = http://java.sun.com/cgi-bin/bugreport.cgi
sun.io.unicode.encoding = Unicodelittle
Sun.cpu.endian = Little
Sun.desktop = Windows
Sun.cpu.isalist = AMD64

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Java code to view all system Properties