SystemProperty (Molindo Utils 1.0-alpha-1 API)

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at.molindo.utils.properties
Enum SystemProperty

java.lang.Object
  java.lang.Enum<SystemProperty>
      at.molindo.utils.properties.SystemProperty

All Implemented Interfaces:: Serializable, Comparable<SystemProperty>

public enum SystemProperty
extends Enum<SystemProperty>
extends Enum<SystemProperty>

This enum is supposed to be a complete list of available system properties on different JVM and Java versions. And with complete I don't mean the list documented at System.getProperties(). I mean properties that are specific to different verndors, versions and operating stystems.

Use get() or toString() to access the property values or set(String) to update them - but only those that aren't read-only ( isReadOnly()).

If you discover some new properties in your environment, please run the contained main(String[]) method and send the output to me:

You may want to check for updates once in a while: SystemProperty.java and Molindo Techblog: The Final Take On Java System Properties

List of tested JVMs
If your JVM is missing, please send me your output of the included main(String[]) method

Sun JVM 1.6

Ubuntu Hardy
Cent OS
Mac OS X
Windows XP

Sun JVM 1.5
- Ubuntu Hardy
Open JDK 6
- Ubuntu Hardy
IBM JVM 1.4.2
- Windows XP

Author:: Stefan Fussenegger
See Also:: System.getProperties()

Enum Constant Summary
`AWT_NATIVE_DOUBLE_BUFFERING` Mac only: true or false
`AWT_TOOLKIT` Mac only: known values: apple.awt.CToolkit
`COM_IBM_CPU_ENDIAN` AIX only: known values: big
`COM_IBM_OTI_CONFIGURATION` AIX only: known values: scar
`COM_IBM_OTI_JCL_BUILD` AIX only: known values: 20081111_1646
`COM_IBM_OTI_VM_BOOTSTRAP_LIBRARY_PATH` AIX only: known values: /prj/was/java/jre/bin
`COM_IBM_OTI_VM_LIBRARY_VERSION` AIX only: known values: 23
`COM_IBM_UTIL_EXTRALIBS_PROPERTIES` AIX only: known values:
`COM_IBM_VM_BITMODE` AIX only: known values: 32
`FILE_ENCODING` Known values: "MacRoman": Mac OS X "Cp1252": Windows XP "UTF-8": CentOS, Ubuntu Hardy/JVM 1.5, Ubuntu Hardy/Open JDK 6 "ISO-8859-1": Ubuntu Hardy/JVM 1.6
`FILE_ENCODING_PKG` This property is available on all
`FILE_SEPARATOR` `System.getProperties()` doc: File separator ("/" on UNIX)
`FTP_NON_PROXY_HOSTS` Mac only: known values: local\|.local\|169.254/16\|.169.254/16
`GNU_CLASSPATH_HOME` GCJ only: known values: /usr
`GNU_CLASSPATH_HOME_URL` GCJ only: known values: file:///usr/lib64
`GNU_CLASSPATH_VERSION` GCJ only: known values: 0.98
`GNU_CLASSPATH_VM_SHORTNAME` GCJ only: known values: libgcj
`GNU_CPU_ENDIAN` GCJ only: known values: little
`GNU_GCJ_PRECOMPILED_DB_PATH` GCJ only: known values: /usr/lib64/gcj-4.4.1/classmap.db
`GNU_GCJ_PROGNAME` GCJ only: known values: SystemProperty
`GNU_GCJ_RUNTIME_ENDORSED_DIRS` GCJ only: known values: /usr/share/java/gcj-endorsed
`GNU_GCJ_USER_REALNAME` GCJ only: known values:
`GNU_JAVA_UTIL_ZONEINFO_DIR` GCJ only: known values: /usr/share/zoneinfo
`GOPHER_PROXY_SET` Mac only: true or false
`GROOVY_HOME` Groovy only: known values: /opt/groovy-1.6.4
`GROOVY_STARTER_CONF` Groovy only: known values: /opt/groovy-1.6.4/conf/groovy-starter.conf
`HTTP_AGENT` GCJ only: known values: gnu-classpath/0.98 (libgcj/4.4.1 20090725 (Red Hat 4.4.1-2))
`HTTP_NON_PROXY_HOSTS` Mac only: known values: local\|.local\|169.254/16\|.169.254/16
`IBM_SIGNALHANDLING_RS` AIX only: known values: false
`IBM_SIGNALHANDLING_SIGCHAIN` AIX only: known values: true
`IBM_SIGNALHANDLING_SIGINT` AIX only: known values: true
`IBM_SYSTEM_ENCODING` AIX only: known values: ISO8859-1
`INVOKEDVIAJAVA` AIX only: known values:
`JAVA_ASSISTIVE` AIX only: known values: ON
`JAVA_AWT_FONTS` AIX only: known values:
`JAVA_AWT_GRAPHICSENV` Known values: "sun.awt.X11GraphicsEnvironment": Ubuntu Hardy "apple.awt.CGraphicsEnvironment": Mac OS X "sun.awt.Win32GraphicsEnvironment": Windows XP
`JAVA_AWT_HEADLESS` turns on headless mode
`JAVA_AWT_PRINTERJOB`
`JAVA_CLASS_PATH`
`JAVA_CLASS_VERSION`
`JAVA_COMPILER`
`JAVA_ENDORSED_DIRS`
`JAVA_EXT_DIRS`
`JAVA_FULLVERSION` GCJ only: known values: GNU libgcj 4.4.1 20090725 (Red Hat 4.4.1-2)
`JAVA_HOME`
`JAVA_IO_TMPDIR` path to temporary directory including trailing file separator
`JAVA_JCL_VERSION` AIX only: known values: 20090506
`JAVA_LIBRARY_PATH`
`JAVA_RUNTIME_NAME`
`JAVA_RUNTIME_VERSION`
`JAVA_SPECIFICATION_NAME`
`JAVA_SPECIFICATION_VENDOR`
`JAVA_SPECIFICATION_VERSION`
`JAVA_UTIL_PREFS__PREFERENCES_FACTORY` AIX only: known values: java.util.prefs.FileSystemPreferencesFactory
`JAVA_VENDOR`
`JAVA_VENDOR_URL`
`JAVA_VENDOR_URL_BUG`
`JAVA_VERSION`
`JAVA_VM_INFO`
`JAVA_VM_NAME` This property may be used to distinguis between a JVM running in defaul (client) and server mode known values: "Java HotSpot(TM) 64-Bit Server VM", "Java HotSpot(TM) Client VM"
`JAVA_VM_SERVER` returns true if VM is running in "Server Mode" (java -server).
`JAVA_VM_SPECIFICATION_NAME`
`JAVA_VM_SPECIFICATION_VENDOR`
`JAVA_VM_SPECIFICATION_VERSION`
`JAVA_VM_VENDOR`
`JAVA_VM_VERSION`
`JXE_CURRENT_ROMIMAGE_VERSION` AIX only: known values: 9
`JXE_LOWEST_ROMIMAGE_VERSION` AIX only: known values: 9
`LINE_SEPARATOR`
`MRJ_VERSION` Mac only: known values: 1060.1.6.0_15-219
`OS_ARCH`
`OS_FAMILY` windows if OS name contains the word "windows" os/2 if OS name contains the word "os/2" netware if OS name contains the word "netware" dos if OS family is not "netware", and its path separator is ";" mac if OS name contains the word "mac" tandem if OS name contains the word "nonstop_kernel" unix if OS family is not "openvms" and not "mac" which names does not end with "X", and its path separator is ":" win9x is OS family is "windows" and OS name contains "95", "98", "me", or "ce" z/os if OS name contains the word "z/os" or "os/390" os/400 if OS name contains the word "os/400" openvms if OS name contains the word "openvms" unknown if none of the above matches
`OS_NAME` see http://lopica.sourceforge.net/os.html for possible values
`OS_VERSION`
`PATH_SEPARATOR`
`PROGRAM_NAME` Groovy only: known values: groovy
`SOCKS_NON_PROXY_HOSTS` Mac only: known values: local\|.local\|169.254/16\|.169.254/16
`SUN_ARCH_DATA_MODEL`
`SUN_AWT_DISABLE_MIXING` TODO doc (hint: for Sun VM on Java 6u14+)
`SUN_AWT_NOERASEBACKGROUND` TODO doc
`SUN_AWT_XEMBEDSERVER` TODO doc
`SUN_BOOT_CLASS_PATH`
`SUN_BOOT_LIBRARY_PATH`
`SUN_CPU_ENDIAN`
`SUN_CPU_ISALIST`
`SUN_DESKTOP` Linux only: known values: gnome
`SUN_IO_UNICODE_ENCODING`
`SUN_JAVA_LAUNCHER`
`SUN_JAVA2D_FONTPATH` AIX only: known values:
`SUN_JNU_ENCODING`
`SUN_MANAGEMENT_COMPILER`
`SUN_OS_PATCH_LEVEL`
`USER_COUNTRY`
`USER_DIR`
`USER_HOME`
`USER_LANGUAGE`
`USER_NAME`
`USER_REGION` GCJ only: known values: US
`USER_TIMEZONE`
`USER_VARIANT` Windows only: known values: "" (empty string)
`USER_ZONEINFO_DIR` Linux only (seen on Sun an OpenJDK JVMs): known values: /usr/share/javazi

Method Summary
`String`	`get()`
`String`	`get(String def)`
`Boolean`	`getBoolean()`
`Boolean`	`getBoolean(Boolean def)`
`String`	`getDefault()` the default return value if property is not set.
`Double`	`getDouble()`
`Double`	`getDouble(Double def)`
`File`	`getFile()`
`File`	`getFile(String def)`
`Float`	`getFloat()`
`Float`	`getFloat(Float def)`
`Integer`	`getInteger()`
`Integer`	`getInteger(Integer def)`
`Long`	`getLong()`
`Long`	`getLong(Long def)`
`String`	`getName()`
`boolean`	`isDerived()`
`boolean`	`isReadOnly()` whether this property should not be modified (i.e.
`static void`	`main(String[] args)` a simple main method to list available system properties.
`String`	`set(String value)`
`String`	`setBoolean(Boolean value)`
`String`	`setDouble(Double value)`
`String`	`setFile(File value)`
`String`	`setFloat(Float value)`
`String`	`setInteger(Integer value)`
`String`	`setLong(Long value)`
`String`	`toDebugString()`
`static String`	`toEnumName(String property)` generate a new enum name from a system property
`String`	`toString()`
`String`	`unset()`
`static SystemProperty`	`valueOf(String name)` Returns the enum constant of this type with the specified name.
`static SystemProperty[]`	`values()` Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum
`clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, valueOf`

Methods inherited from class java.lang.Object
`getClass, notify, notifyAll, wait, wait, wait`

Enum Constant Detail

FILE_ENCODING

public static final SystemProperty FILE_ENCODING

Known values:

"MacRoman": Mac OS X
"Cp1252": Windows XP
"UTF-8": CentOS, Ubuntu Hardy/JVM 1.5, Ubuntu Hardy/Open JDK 6
"ISO-8859-1": Ubuntu Hardy/JVM 1.6

Note: This property is not part of System.getProperties() doc.

FILE_ENCODING_PKG

public static final SystemProperty FILE_ENCODING_PKG

This property is available on all

Known values:

"sun.io"

Note: This property is not part of System.getProperties() doc.

FILE_SEPARATOR

public static final SystemProperty FILE_SEPARATOR

System.getProperties() doc: File separator ("/" on UNIX)

Known values:

"\" (Windows)
"/" (Mac OS X, Linux)
"\\" (Windows, IBM JVM)

JAVA_AWT_GRAPHICSENV

public static final SystemProperty JAVA_AWT_GRAPHICSENV

Known values:

"sun.awt.X11GraphicsEnvironment": Ubuntu Hardy
"apple.awt.CGraphicsEnvironment": Mac OS X
"sun.awt.Win32GraphicsEnvironment": Windows XP

Note: This property is not part of System.getProperties() doc.

JAVA_AWT_PRINTERJOB

public static final SystemProperty JAVA_AWT_PRINTERJOB

JAVA_CLASS_PATH

public static final SystemProperty JAVA_CLASS_PATH

JAVA_CLASS_VERSION

public static final SystemProperty JAVA_CLASS_VERSION

JAVA_COMPILER

public static final SystemProperty JAVA_COMPILER

JAVA_ENDORSED_DIRS

public static final SystemProperty JAVA_ENDORSED_DIRS

JAVA_EXT_DIRS

public static final SystemProperty JAVA_EXT_DIRS

JAVA_HOME

public static final SystemProperty JAVA_HOME

JAVA_IO_TMPDIR

public static final SystemProperty JAVA_IO_TMPDIR

path to temporary directory including trailing file separator

JAVA_LIBRARY_PATH

public static final SystemProperty JAVA_LIBRARY_PATH

JAVA_RUNTIME_NAME

public static final SystemProperty JAVA_RUNTIME_NAME

JAVA_RUNTIME_VERSION

public static final SystemProperty JAVA_RUNTIME_VERSION

JAVA_SPECIFICATION_NAME

public static final SystemProperty JAVA_SPECIFICATION_NAME

JAVA_SPECIFICATION_VENDOR

public static final SystemProperty JAVA_SPECIFICATION_VENDOR

JAVA_SPECIFICATION_VERSION

public static final SystemProperty JAVA_SPECIFICATION_VERSION

JAVA_VERSION

public static final SystemProperty JAVA_VERSION

JAVA_VENDOR

public static final SystemProperty JAVA_VENDOR

JAVA_VENDOR_URL

public static final SystemProperty JAVA_VENDOR_URL

JAVA_VENDOR_URL_BUG

public static final SystemProperty JAVA_VENDOR_URL_BUG

JAVA_VM_INFO

public static final SystemProperty JAVA_VM_INFO

JAVA_VM_NAME

public static final SystemProperty JAVA_VM_NAME

This property may be used to distinguis between a JVM running in defaul (client) and server mode known values: "Java HotSpot(TM) 64-Bit Server VM", "Java HotSpot(TM) Client VM"

JAVA_VM_SPECIFICATION_NAME

public static final SystemProperty JAVA_VM_SPECIFICATION_NAME

JAVA_VM_SPECIFICATION_VENDOR

public static final SystemProperty JAVA_VM_SPECIFICATION_VENDOR

JAVA_VM_SPECIFICATION_VERSION

public static final SystemProperty JAVA_VM_SPECIFICATION_VERSION

JAVA_VM_VERSION

public static final SystemProperty JAVA_VM_VERSION

JAVA_VM_VENDOR

public static final SystemProperty JAVA_VM_VENDOR

LINE_SEPARATOR

public static final SystemProperty LINE_SEPARATOR

OS_NAME

public static final SystemProperty OS_NAME

see http://lopica.sourceforge.net/os.html for possible values

OS_ARCH

public static final SystemProperty OS_ARCH

OS_VERSION

public static final SystemProperty OS_VERSION

PATH_SEPARATOR

public static final SystemProperty PATH_SEPARATOR

SUN_ARCH_DATA_MODEL

public static final SystemProperty SUN_ARCH_DATA_MODEL

SUN_BOOT_CLASS_PATH

public static final SystemProperty SUN_BOOT_CLASS_PATH

SUN_BOOT_LIBRARY_PATH

public static final SystemProperty SUN_BOOT_LIBRARY_PATH

SUN_CPU_ENDIAN

public static final SystemProperty SUN_CPU_ENDIAN

SUN_CPU_ISALIST

public static final SystemProperty SUN_CPU_ISALIST

SUN_IO_UNICODE_ENCODING

public static final SystemProperty SUN_IO_UNICODE_ENCODING

SUN_JAVA_LAUNCHER

public static final SystemProperty SUN_JAVA_LAUNCHER

SUN_JNU_ENCODING

public static final SystemProperty SUN_JNU_ENCODING

SUN_MANAGEMENT_COMPILER

public static final SystemProperty SUN_MANAGEMENT_COMPILER

SUN_OS_PATCH_LEVEL

public static final SystemProperty SUN_OS_PATCH_LEVEL

USER_COUNTRY

public static final SystemProperty USER_COUNTRY

USER_DIR

public static final SystemProperty USER_DIR

USER_HOME

public static final SystemProperty USER_HOME

USER_LANGUAGE

public static final SystemProperty USER_LANGUAGE

USER_NAME

public static final SystemProperty USER_NAME

USER_TIMEZONE

public static final SystemProperty USER_TIMEZONE

USER_VARIANT

public static final SystemProperty USER_VARIANT

Windows only: known values: "" (empty string)

SUN_DESKTOP

public static final SystemProperty SUN_DESKTOP

Linux only: known values: gnome

USER_ZONEINFO_DIR

public static final SystemProperty USER_ZONEINFO_DIR

Linux only (seen on Sun an OpenJDK JVMs): known values: /usr/share/javazi

AWT_NATIVE_DOUBLE_BUFFERING

public static final SystemProperty AWT_NATIVE_DOUBLE_BUFFERING

Mac only: true or false

AWT_TOOLKIT

public static final SystemProperty AWT_TOOLKIT

Mac only: known values: apple.awt.CToolkit

FTP_NON_PROXY_HOSTS

public static final SystemProperty FTP_NON_PROXY_HOSTS

Mac only: known values: local|*.local|169.254/16|*.169.254/16

GOPHER_PROXY_SET

public static final SystemProperty GOPHER_PROXY_SET

Mac only: true or false

HTTP_NON_PROXY_HOSTS

public static final SystemProperty HTTP_NON_PROXY_HOSTS

Mac only: known values: local|*.local|169.254/16|*.169.254/16

MRJ_VERSION

public static final SystemProperty MRJ_VERSION

Mac only: known values: 1060.1.6.0_15-219

SOCKS_NON_PROXY_HOSTS

public static final SystemProperty SOCKS_NON_PROXY_HOSTS

Mac only: known values: local|*.local|169.254/16|*.169.254/16

GNU_CLASSPATH_HOME

public static final SystemProperty GNU_CLASSPATH_HOME

GCJ only: known values: /usr

GNU_CLASSPATH_HOME_URL

public static final SystemProperty GNU_CLASSPATH_HOME_URL

GCJ only: known values: file:///usr/lib64

GNU_CLASSPATH_VERSION

public static final SystemProperty GNU_CLASSPATH_VERSION

GCJ only: known values: 0.98

GNU_CLASSPATH_VM_SHORTNAME

public static final SystemProperty GNU_CLASSPATH_VM_SHORTNAME

GCJ only: known values: libgcj

GNU_CPU_ENDIAN

public static final SystemProperty GNU_CPU_ENDIAN

GCJ only: known values: little

GNU_GCJ_PRECOMPILED_DB_PATH

public static final SystemProperty GNU_GCJ_PRECOMPILED_DB_PATH

GCJ only: known values: /usr/lib64/gcj-4.4.1/classmap.db

GNU_GCJ_PROGNAME

public static final SystemProperty GNU_GCJ_PROGNAME

GCJ only: known values: SystemProperty

GNU_GCJ_RUNTIME_ENDORSED_DIRS

public static final SystemProperty GNU_GCJ_RUNTIME_ENDORSED_DIRS

GCJ only: known values: /usr/share/java/gcj-endorsed

GNU_GCJ_USER_REALNAME

public static final SystemProperty GNU_GCJ_USER_REALNAME

GCJ only: known values:

GNU_JAVA_UTIL_ZONEINFO_DIR

public static final SystemProperty GNU_JAVA_UTIL_ZONEINFO_DIR

GCJ only: known values: /usr/share/zoneinfo

HTTP_AGENT

public static final SystemProperty HTTP_AGENT

GCJ only: known values: gnu-classpath/0.98 (libgcj/4.4.1 20090725 (Red Hat 4.4.1-2))

JAVA_FULLVERSION

public static final SystemProperty JAVA_FULLVERSION

GCJ only: known values: GNU libgcj 4.4.1 20090725 (Red Hat 4.4.1-2)

USER_REGION

public static final SystemProperty USER_REGION

GCJ only: known values: US

COM_IBM_CPU_ENDIAN

public static final SystemProperty COM_IBM_CPU_ENDIAN

AIX only: known values: big

COM_IBM_OTI_CONFIGURATION

public static final SystemProperty COM_IBM_OTI_CONFIGURATION

AIX only: known values: scar

COM_IBM_OTI_JCL_BUILD

public static final SystemProperty COM_IBM_OTI_JCL_BUILD

AIX only: known values: 20081111_1646

COM_IBM_OTI_VM_BOOTSTRAP_LIBRARY_PATH

public static final SystemProperty COM_IBM_OTI_VM_BOOTSTRAP_LIBRARY_PATH

AIX only: known values: /prj/was/java/jre/bin

COM_IBM_OTI_VM_LIBRARY_VERSION

public static final SystemProperty COM_IBM_OTI_VM_LIBRARY_VERSION

AIX only: known values: 23

COM_IBM_UTIL_EXTRALIBS_PROPERTIES

public static final SystemProperty COM_IBM_UTIL_EXTRALIBS_PROPERTIES

AIX only: known values:

COM_IBM_VM_BITMODE

public static final SystemProperty COM_IBM_VM_BITMODE

AIX only: known values: 32

IBM_SIGNALHANDLING_RS

public static final SystemProperty IBM_SIGNALHANDLING_RS

AIX only: known values: false

IBM_SIGNALHANDLING_SIGCHAIN

public static final SystemProperty IBM_SIGNALHANDLING_SIGCHAIN

AIX only: known values: true

IBM_SIGNALHANDLING_SIGINT

public static final SystemProperty IBM_SIGNALHANDLING_SIGINT

AIX only: known values: true

IBM_SYSTEM_ENCODING

public static final SystemProperty IBM_SYSTEM_ENCODING

AIX only: known values: ISO8859-1

INVOKEDVIAJAVA

public static final SystemProperty INVOKEDVIAJAVA

AIX only: known values:

JAVA_ASSISTIVE

public static final SystemProperty JAVA_ASSISTIVE

AIX only: known values: ON

JAVA_AWT_FONTS

public static final SystemProperty JAVA_AWT_FONTS

AIX only: known values:

JAVA_JCL_VERSION

public static final SystemProperty JAVA_JCL_VERSION

AIX only: known values: 20090506

JAVA_UTIL_PREFS__PREFERENCES_FACTORY

public static final SystemProperty JAVA_UTIL_PREFS__PREFERENCES_FACTORY

AIX only: known values: java.util.prefs.FileSystemPreferencesFactory

JXE_CURRENT_ROMIMAGE_VERSION

public static final SystemProperty JXE_CURRENT_ROMIMAGE_VERSION

AIX only: known values: 9

JXE_LOWEST_ROMIMAGE_VERSION

public static final SystemProperty JXE_LOWEST_ROMIMAGE_VERSION

AIX only: known values: 9

SUN_JAVA2D_FONTPATH

public static final SystemProperty SUN_JAVA2D_FONTPATH

AIX only: known values:

PROGRAM_NAME

public static final SystemProperty PROGRAM_NAME

Groovy only: known values: groovy

GROOVY_HOME

public static final SystemProperty GROOVY_HOME

Groovy only: known values: /opt/groovy-1.6.4

GROOVY_STARTER_CONF

public static final SystemProperty GROOVY_STARTER_CONF

Groovy only: known values: /opt/groovy-1.6.4/conf/groovy-starter.conf

JAVA_AWT_HEADLESS

public static final SystemProperty JAVA_AWT_HEADLESS

turns on headless mode

SUN_AWT_DISABLE_MIXING

public static final SystemProperty SUN_AWT_DISABLE_MIXING

TODO doc (hint: for Sun VM on Java 6u14+)

SUN_AWT_NOERASEBACKGROUND

public static final SystemProperty SUN_AWT_NOERASEBACKGROUND

TODO doc

SUN_AWT_XEMBEDSERVER

public static final SystemProperty SUN_AWT_XEMBEDSERVER

TODO doc

OS_FAMILY

public static final SystemProperty OS_FAMILY

windows if OS name contains the word "windows"
os/2 if OS name contains the word "os/2"
netware if OS name contains the word "netware"
dos if OS family is not "netware", and its path separator is ";"
mac if OS name contains the word "mac"
tandem if OS name contains the word "nonstop_kernel"
unix if OS family is not "openvms" and not "mac" which names does not end with "X", and its path separator is ":"
win9x is OS family is "windows" and OS name contains "95", "98", "me", or "ce"
z/os if OS name contains the word "z/os" or "os/390"
os/400 if OS name contains the word "os/400"
openvms if OS name contains the word "openvms"
unknown if none of the above matches

JAVA_VM_SERVER

public static final SystemProperty JAVA_VM_SERVER

returns true if VM is running in "Server Mode" (java -server). This is only true if java.vm.name starts with "Java HotSpot(TM)" and contains "Server". null is returned if java.vm.name is null (which should never be the case).

Stackoverflow: How to make sure I'm using the "server" JVM?

Method Detail

values

public static SystemProperty[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (SystemProperty c : SystemProperty.values())
    System.out.println(c);

Returns:: an array containing the constants of this enum type, in the order they are declared

valueOf

public static SystemProperty valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:: name - the name of the enum constant to be returned.
Returns:: the enum constant with the specified name
Throws:: IllegalArgumentException - if this enum type has no constant with the specified name; NullPointerException - if the argument is null

get

public String get()

Returns:: the string value of the system property, or null if there is no property with that key and getDefault() is null too
See Also:: System.getProperty(String), AccessController.doPrivileged(PrivilegedAction)

get

public String get(String def)

Returns:: the string value of the system property, or def if there is no property with that key. (getDefault() is ignored)
See Also:: System.getProperty(String), AccessController.doPrivileged(PrivilegedAction)

getBoolean

public Boolean getBoolean()

Returns:: returns parsed boolean or null if get() returned null
See Also:: get(), Boolean.parseBoolean(String)

getBoolean

public Boolean getBoolean(Boolean def)

Returns:: returns parsed boolean or null if get(String) returned null
See Also:: get(), Integer.parseInt(String)

getInteger

public Integer getInteger()
                   throws NumberFormatException

Returns:: returns parsed integer or null if get() returned null
Throws:: NumberFormatException
See Also:: get(), Integer.parseInt(String)

getInteger

public Integer getInteger(Integer def)
                   throws NumberFormatException

Returns:: returns parsed integer or null if get(String) returned null
Throws:: NumberFormatException
See Also:: get(), Integer.parseInt(String)

getLong

public Long getLong()
             throws NumberFormatException

Returns:: returns parsed Long or null if get() returned null
Throws:: NumberFormatException
See Also:: get(), Long.parseLong(String)

getLong

public Long getLong(Long def)
             throws NumberFormatException

Returns:: returns parsed Long or null if get(String) returned null
Throws:: NumberFormatException
See Also:: get(), Long.parseLong(String)

getFloat

public Float getFloat()
               throws NumberFormatException

Returns:: returns parsed Float or null if get() returned null
Throws:: NumberFormatException
See Also:: get(), Float.parseFloat(String)

getFloat

public Float getFloat(Float def)
               throws NumberFormatException

Returns:: returns parsed Float or null if get(String) returned null
Throws:: NumberFormatException
See Also:: get(), Float.parseFloat(String)

getDouble

public Double getDouble()
                 throws NumberFormatException

Returns:: returns parsed Double or null if get() returned null
Throws:: NumberFormatException
See Also:: get(), Double.parseDouble(String)

getDouble

public Double getDouble(Double def)
                 throws NumberFormatException

Returns:: returns parsed Double or null if get(String) returned null
Throws:: NumberFormatException
See Also:: get(), Double.parseDouble(String)

getFile

public File getFile()

Returns:: a file constructed with the returned value of get() or null
See Also:: get()

getFile

public File getFile(String def)

Parameters:: def - default value
Returns:: a file constructed with the returned value of get(String) or null
See Also:: get()

set

public String set(String value)

Parameters:: value - the new value
Returns:: the previous value of this system property or null if it didn't have one
Throws:: UnsupportedOperationException - if this property is read-only
See Also:: System.setProperty(String, String), AccessController.doPrivileged(PrivilegedAction), isReadOnly()

setBoolean

public String setBoolean(Boolean value)
                  throws NumberFormatException

Throws:: NumberFormatException

setInteger

public String setInteger(Integer value)
                  throws NumberFormatException

Throws:: NumberFormatException

setLong

public String setLong(Long value)
               throws NumberFormatException

Throws:: NumberFormatException

setDouble

public String setDouble(Double value)
                 throws NumberFormatException

Throws:: NumberFormatException

setFloat

public String setFloat(Float value)
                throws NumberFormatException

Throws:: NumberFormatException

setFile

public String setFile(File value)
               throws IOException

Throws:: IOException

unset

public String unset()

getName

public String getName()

Returns:: name of this property

isReadOnly

public boolean isReadOnly()

whether this property should not be modified (i.e. "read-only"). Note that it is possible to use System.setProperty(String, String) directly. It's use is discouraged though (as it might not have the desired effect)

Returns:: true if this property should not be modified

isDerived

public boolean isDerived()

Returns:: true if this is property doesn't exist but is derived from another property (e.g. OS_FAMILY which is derived by other properties, mainly OS_NAME)

getDefault

public String getDefault()

the default return value if property is not set. for most properties this is null. For example, the default for java.awt.headless is "false"

Returns:: the default value for this property or null if not applicable

toString

public String toString()

Overrides:: toString in class Enum<SystemProperty>

Returns:: property value (same as get()
See Also:: get()

toDebugString

public String toDebugString()

Returns:: a string representation of this object (e.g. "OS_NAME: os.name=Linux (read-only)")

main

public static void main(String[] args)

a simple main method to list available system properties. additionally, it generates Java code for yet unknown properties. If you find some of them, please let us know: http://techblog.molindo.at/2009/11/java-system-properties.html

Parameters:: args - arguments are ignored

toEnumName

public static String toEnumName(String property)

generate a new enum name from a system property

Parameters:: property - property name (e.g. "os.name")
Returns:: the resulting enum name (e.g. "OS_NAME")

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at.molindo.utils.properties Enum SystemProperty

FILE_ENCODING

FILE_ENCODING_PKG

FILE_SEPARATOR

JAVA_AWT_GRAPHICSENV

JAVA_AWT_PRINTERJOB

JAVA_CLASS_PATH

JAVA_CLASS_VERSION

JAVA_COMPILER

JAVA_ENDORSED_DIRS

JAVA_EXT_DIRS

JAVA_HOME

JAVA_IO_TMPDIR

JAVA_LIBRARY_PATH

JAVA_RUNTIME_NAME

JAVA_RUNTIME_VERSION

JAVA_SPECIFICATION_NAME

JAVA_SPECIFICATION_VENDOR

JAVA_SPECIFICATION_VERSION

JAVA_VERSION

JAVA_VENDOR

JAVA_VENDOR_URL

JAVA_VENDOR_URL_BUG

JAVA_VM_INFO

JAVA_VM_NAME

JAVA_VM_SPECIFICATION_NAME

JAVA_VM_SPECIFICATION_VENDOR

JAVA_VM_SPECIFICATION_VERSION

JAVA_VM_VERSION

JAVA_VM_VENDOR

LINE_SEPARATOR

OS_NAME

OS_ARCH

OS_VERSION

PATH_SEPARATOR

SUN_ARCH_DATA_MODEL

SUN_BOOT_CLASS_PATH

SUN_BOOT_LIBRARY_PATH

SUN_CPU_ENDIAN

SUN_CPU_ISALIST

SUN_IO_UNICODE_ENCODING

SUN_JAVA_LAUNCHER

SUN_JNU_ENCODING

SUN_MANAGEMENT_COMPILER

SUN_OS_PATCH_LEVEL

USER_COUNTRY

USER_DIR

USER_HOME

USER_LANGUAGE

USER_NAME

USER_TIMEZONE

USER_VARIANT

SUN_DESKTOP

USER_ZONEINFO_DIR

AWT_NATIVE_DOUBLE_BUFFERING

AWT_TOOLKIT

FTP_NON_PROXY_HOSTS

GOPHER_PROXY_SET

HTTP_NON_PROXY_HOSTS

MRJ_VERSION

SOCKS_NON_PROXY_HOSTS

GNU_CLASSPATH_HOME

GNU_CLASSPATH_HOME_URL

GNU_CLASSPATH_VERSION

GNU_CLASSPATH_VM_SHORTNAME

GNU_CPU_ENDIAN

GNU_GCJ_PRECOMPILED_DB_PATH

GNU_GCJ_PROGNAME

GNU_GCJ_RUNTIME_ENDORSED_DIRS

GNU_GCJ_USER_REALNAME

GNU_JAVA_UTIL_ZONEINFO_DIR

HTTP_AGENT

JAVA_FULLVERSION

USER_REGION

COM_IBM_CPU_ENDIAN

COM_IBM_OTI_CONFIGURATION

COM_IBM_OTI_JCL_BUILD

COM_IBM_OTI_VM_BOOTSTRAP_LIBRARY_PATH

COM_IBM_OTI_VM_LIBRARY_VERSION

COM_IBM_UTIL_EXTRALIBS_PROPERTIES

at.molindo.utils.properties
Enum SystemProperty