com.phloc.commons

Class SystemProperties

java.lang.Object

com.phloc.commons.SystemProperties

@Immutable
public final class SystemProperties
extends Object

This class wraps all the Java system properties like version number etc.

Author:

Philip Helger

Method Summary

Methods

Modifier and Type	Method and Description
static boolean	containsPropertyName(String sPropertyName) Check if a system property with the given name exists.
static Map<String,String>	getAllProperties()
static Set<String>	getAllPropertyNames()
static String	getFileSeparator()
static String	getJavaClassPath()
static String	getJavaClassVersion()
static String	getJavaHome()
static String	getJavaLibraryPath()
static String	getJavaSpecificationUrl()
static String	getJavaSpecificationVendor()
static String	getJavaSpecificationVersion()
static String	getJavaVendor()
static String	getJavaVendorURL()
static String	getJavaVersion()
static String	getJavaVmSpecificationUrl()
static String	getJavaVmSpecificationVendor()
static String	getJavaVmSpecificationVersion()
static String	getJavaVmUrl()
static String	getJavaVmVendor()
static String	getJavaVmVersion()
static String	getLineSeparator()
static String	getOsArch()
static String	getOsName()
static String	getOsVersion()
static String	getPathSeparator()
static String	getPropertyValue(String sKey)
static String	getPropertyValueOrNull(String sKey)
static String	getTmpDir()
static String	getUserDir()
static String	getUserHome()
static String	getUserName()
static String	removePropertyValue(String sKey) Remove a system property value under consideration of an eventually present SecurityManager.
static void	setPropertyValue(String sKey, String sValue) Set a system property value under consideration of an eventually present SecurityManager.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getPropertyValueOrNull

@Nullable
public static String getPropertyValueOrNull(@Nullable
                                     String sKey)

getPropertyValue

@Nullable
public static String getPropertyValue(@Nullable
                               String sKey)

setPropertyValue

public static void setPropertyValue(@Nonnull
                    String sKey,
                    @Nullable
                    String sValue)

Set a system property value under consideration of an eventually present SecurityManager.

Parameters:

sKey - The key of the system property. May not be null.

sValue - The value of the system property. If the value is null the property is removed.

removePropertyValue

@Nullable
public static String removePropertyValue(@Nonnull
                                  String sKey)

Remove a system property value under consideration of an eventually present SecurityManager.

Parameters:

sKey - The key of the system property to be removed. May not be null.

Returns:

the previous string value of the system property, or null if there was no property with that key.

getJavaVersion

@Nullable
public static String getJavaVersion()

getJavaVendor

@Nullable
public static String getJavaVendor()

getJavaVendorURL

@Nullable
public static String getJavaVendorURL()

getJavaHome

@Nullable
public static String getJavaHome()

getJavaClassVersion

@Nullable
public static String getJavaClassVersion()

getJavaClassPath

@Nullable
public static String getJavaClassPath()

getJavaLibraryPath

@Nullable
public static String getJavaLibraryPath()

getOsName

@Nullable
public static String getOsName()

getOsArch

@Nullable
public static String getOsArch()

getOsVersion

@Nullable
public static String getOsVersion()

getFileSeparator

@Nullable
public static String getFileSeparator()

getPathSeparator

@Nullable
public static String getPathSeparator()

getLineSeparator

@Nullable
public static String getLineSeparator()

getUserName

@Nullable
public static String getUserName()

getUserHome

@Nullable
public static String getUserHome()

getUserDir

@Nullable
public static String getUserDir()

getJavaVmSpecificationVersion

@Nullable
public static String getJavaVmSpecificationVersion()

getJavaVmSpecificationVendor

@Nullable
public static String getJavaVmSpecificationVendor()

getJavaVmSpecificationUrl

@Nullable
public static String getJavaVmSpecificationUrl()

getJavaVmVersion

@Nullable
public static String getJavaVmVersion()

getJavaVmVendor

@Nullable
public static String getJavaVmVendor()

getJavaVmUrl

@Nullable
public static String getJavaVmUrl()

getJavaSpecificationVersion

@Nullable
public static String getJavaSpecificationVersion()

getJavaSpecificationVendor

@Nullable
public static String getJavaSpecificationVendor()

getJavaSpecificationUrl

@Nullable
public static String getJavaSpecificationUrl()

getTmpDir

@DevelopersNote(value="This property is not part of the language but part of the Sun SDK")
@Nullable
public static String getTmpDir()

getAllPropertyNames

@Nonnull
@ReturnsMutableCopy
public static Set<String> getAllPropertyNames()

Returns:

A set with all defined property names. Never null.

getAllProperties

@Nonnull
@ReturnsMutableCopy
public static Map<String,String> getAllProperties()

Returns:

A map with all system properties where the key is the system property name and the value is the system property value.

containsPropertyName

public static boolean containsPropertyName(String sPropertyName)

Check if a system property with the given name exists.

Parameters:

sPropertyName - The name of the property.

Returns:

true if such a system property is present, false otherwise