icy.system

Class SystemUtil

java.lang.Object

icy.system.SystemUtil

public class SystemUtil
extends java.lang.Object

Author:

stephane

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	SYSTEM_MAC_OS
static java.lang.String	SYSTEM_UNIX
static java.lang.String	SYSTEM_WINDOWS

Constructor Summary

Constructors

Constructor and Description
SystemUtil()

Method Summary

Methods

Modifier and Type	Method and Description
static boolean	addToJavaLibraryPath(java.lang.String[] directories)
static java.awt.image.BufferedImage	createCompatibleImage(int width, int height)
static java.awt.image.BufferedImage	createCompatibleImage(int width, int height, int transparency)
static java.awt.image.VolatileImage	createCompatibleVolatileImage(int width, int height)
static java.awt.image.VolatileImage	createCompatibleVolatileImage(int width, int height, int transparency)
static java.lang.Process	exec(java.lang.String cmd) Execute a system command and return the attached process.
static java.lang.Process	exec(java.lang.String cmd, java.lang.String dir) Execute a system command and return the attached process.
static java.lang.Process	execJAR(java.lang.String jarPath) Launch specified jar file.
static java.lang.Process	execJAR(java.lang.String jarPath, java.lang.String appArgs) Launch specified jar file.
static java.lang.Process	execJAR(java.lang.String jarPath, java.lang.String vmArgs, java.lang.String appArgs) Launch specified jar file.
static java.lang.Process	execJAR(java.lang.String jarPath, java.lang.String vmArgs, java.lang.String appArgs, java.lang.String workDir) Launch specified jar file.
static int	getAvailableProcessors() Deprecated. Use getNumberOfCPUs() instead
static java.lang.ClassLoader	getContextClassLoader()
static int	getCpuLoad() Return average CPU load of the application processes from the last call (-1 if no available)
static int	getCtrlMask() Deprecated. Use getMenuCtrlMask() instead.
static java.awt.GraphicsConfiguration	getDefaultGraphicsConfiguration() Return the default graphics configuration.
static java.awt.GraphicsDevice	getDefaultScreenDevice() Return the default screen device.
static java.awt.Desktop	getDesktop()
static java.awt.Rectangle	getDesktopBounds() Return the entire desktop bounds (take multi screens in account)
static java.awt.Rectangle	getDesktopBounds(boolean removeInsets) Return the entire desktop bounds (take multi screens in account).
static long	getFreeMemory() Return free physic memory of system (in bytes)
static long	getJavaAllocatedMemory() Return memory currently allocated by the JVM (in bytes)
static int	getJavaArchDataModel() Returns the JVM data architecture model.
static long	getJavaFreeMemory() Return total amount of free memory available to the JVM (in bytes)
static long	getJavaMaxMemory() Return maximum amount of memory the JVM will attempt to use (in bytes)
static java.lang.String	getJavaName() Returns the JVM name.
static long	getJavaTotalMemory() Deprecated. Use getJavaAllocatedMemory() instead.
static long	getJavaUsedMemory() Return actual memory used by the JVM (in bytes)
static java.lang.String	getJavaVersion() Returns the JVM version.
static double	getJavaVersionAsNumber() Returns the JVM version in number format (ex: 6.091, 7.071, 8.151..)
static Version	getJavaVersionAsVersion() Returns the JVM integer version (ex: 6.0.91, 7.0.71, 8.0.151..)
static java.awt.GraphicsEnvironment	getLocalGraphicsEnvironment()
static java.awt.Rectangle	getMaximumWindowBounds() GraphicsEnvironment.getMaximumWindowBounds()
static int	getMenuCtrlMask() Return the CTRL key mask used for Menu shortcut.
static int	getNumberOfCPUs() Return total number of processors or cores available to the JVM (same as system)
static java.lang.String	getOSArch() Returns the Operating System architecture name.
static java.lang.String	getOSArchIdString() Return an id OS architecture string example : "win32", "win64", "mac32", "mac64", "unix32"...
static java.lang.String	getOSName() Returns the Operating System name.
static java.lang.String	getOSNameId() Return an id OS string : Windows system return SystemUtil.SYSTEM_WINDOWS MAC OS return SystemUtil.SYSTEM_MAC_OS Unix system return SystemUtil.SYSTEM_UNIX An empty string is returned is OS is unknown.
static java.lang.String	getOSVersion() Returns the Operating System version.
static long	getProcessCpuTime() Return system process CPU time
static java.lang.String	getProperty(java.lang.String name)
static java.lang.String	getProperty(java.lang.String name, java.lang.String defaultValue)
static java.awt.Rectangle	getScreenBounds(java.awt.GraphicsDevice graphicsDevice, boolean removeInsets) Return bounds for specified screen.
static java.awt.GraphicsDevice	getScreenDevice(int index) Return the screen device corresponding to specified index.
static java.awt.GraphicsDevice	getScreenDevice(java.awt.Point position) Returns the screen device corresponding to the given position.
static java.awt.GraphicsDevice	getScreenDevice(java.awt.Rectangle region) Returns the main screen device corresponding to the given region.
static int	getScreenDeviceCount() Return the number of screen device.
static java.util.List<java.awt.GraphicsDevice>	getScreenDevices() Return all available screen devices.
static java.util.List<java.awt.GraphicsDevice>	getScreenDevices(java.awt.Rectangle region) Returns all screen device intersecting the given region.
static java.awt.BufferCapabilities	getSystemBufferCapabilities()
static java.lang.ClassLoader	getSystemClassLoader()
static java.awt.image.ColorModel	getSystemColorModel()
static java.awt.image.ColorModel	getSystemColorModel(int transparency)
static int	getSystemCpuLoad() Deprecated. Use getCpuLoad() instead
static int	getSystemCtrlMask() Deprecated. Use getMenuCtrlMask() instead
static java.awt.DisplayMode	getSystemDisplayMode() GraphicsDevice.getDisplayMode()
static long	getSystemFreeMemory() Deprecated. Use getFreeMemory() instead
static java.awt.GraphicsConfiguration	getSystemGraphicsConfiguration() Deprecated. Use getDefaultGraphicsConfiguration() instead.
static java.awt.ImageCapabilities	getSystemImageCapabilities()
static long	getSystemProcessCpuTime() Deprecated. Use getProcessCpuTime() instead
static long	getSystemTotalMemory() Deprecated. Use getTotalMemory() instead
static java.lang.String	getTempDirectory() Returns default temporary directory.
static java.lang.String	getTempLibraryDirectory() Returns temporary native library path (used to load native libraries from plugin)
static long	getTotalMemory() Return total physic memory of system (in bytes)
static java.lang.String	getUserName() Returns the user name.
static boolean	is32bits() Returns true is the JVM is 32 bits.
static boolean	is64bits() Returns true is the JVM is 64 bits.
static boolean	isHeadLess() Returns true if current system is "head less" (no screen output device).
static boolean	isLinkSupported() Returns true is the operating system support link (symbolic or not).
static boolean	isMac() Returns true is the Operating System is Mac OS based.
static boolean	isUnix() Returns true is the Operating System is Unix / Linux based.
static boolean	isWindow() Deprecated. Use isWindows() instead.
static boolean	isWindows() Returns true is the Operating System is Windows based.
static boolean	isWindows64() Returns true is the Operating System is Windows 64 bits whatever is the JVM installed (32 or 64 bits).
static void	loadLibrary(java.lang.String pathname) Load the specified native library.
static void	loadLibrary(java.lang.String dir, java.lang.String name) Load the specified native library.
static boolean	openFolder(java.lang.String folder) Launch the system file manager on specified folder (if supported)
static java.lang.String	setProperty(java.lang.String name, java.lang.String value)

Methods inherited from class java.lang.Object

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

Field Detail

SYSTEM_WINDOWS

public static final java.lang.String SYSTEM_WINDOWS

See Also:

Constant Field Values

SYSTEM_MAC_OS

public static final java.lang.String SYSTEM_MAC_OS

See Also:

Constant Field Values

SYSTEM_UNIX

public static final java.lang.String SYSTEM_UNIX

See Also:

Constant Field Values

Constructor Detail

SystemUtil

public SystemUtil()

Method Detail

execJAR

public static java.lang.Process execJAR(java.lang.String jarPath,
                        java.lang.String vmArgs,
                        java.lang.String appArgs,
                        java.lang.String workDir)

Launch specified jar file.

Parameters:

jarPath - jar file path.

vmArgs - arguments for the java virtual machine.

appArgs - arguments for jar application.

workDir - working directory.

execJAR

public static java.lang.Process execJAR(java.lang.String jarPath,
                        java.lang.String vmArgs,
                        java.lang.String appArgs)

Launch specified jar file.

Parameters:

jarPath - jar file path.

vmArgs - arguments for the java virtual machine.

appArgs - arguments for jar application.

execJAR

public static java.lang.Process execJAR(java.lang.String jarPath,
                        java.lang.String appArgs)

Launch specified jar file.

Parameters:

jarPath - jar file path.

appArgs - arguments for jar application.

execJAR

public static java.lang.Process execJAR(java.lang.String jarPath)

Launch specified jar file.

Parameters:

jarPath - jar file path.

exec

public static java.lang.Process exec(java.lang.String cmd)

Execute a system command and return the attached process.

Parameters:

cmd - system command to execute.

exec

public static java.lang.Process exec(java.lang.String cmd,
                     java.lang.String dir)

Execute a system command and return the attached process.

Parameters:

cmd - system command to execute.

dir - the working directory of the subprocess, or null if the subprocess should inherit the working directory of the current process.

createCompatibleImage

public static java.awt.image.BufferedImage createCompatibleImage(int width,
                                                 int height)

createCompatibleImage

public static java.awt.image.BufferedImage createCompatibleImage(int width,
                                                 int height,
                                                 int transparency)

createCompatibleVolatileImage

public static java.awt.image.VolatileImage createCompatibleVolatileImage(int width,
                                                         int height)

createCompatibleVolatileImage

public static java.awt.image.VolatileImage createCompatibleVolatileImage(int width,
                                                         int height,
                                                         int transparency)

getDesktop

public static java.awt.Desktop getDesktop()

openFolder

public static boolean openFolder(java.lang.String folder)
                          throws java.io.IOException

Launch the system file manager on specified folder (if supported)

Throws:

java.io.IOException

getProperty

public static java.lang.String getProperty(java.lang.String name)

See Also:

System.getProperty(String)

getProperty

public static java.lang.String getProperty(java.lang.String name,
                           java.lang.String defaultValue)

See Also:

System.getProperty(String, String)

setProperty

public static java.lang.String setProperty(java.lang.String name,
                           java.lang.String value)

See Also:

System.setProperty(String, String)

getCtrlMask

@Deprecated
public static int getCtrlMask()

Deprecated. Use getMenuCtrlMask() instead.

getMenuCtrlMask

public static int getMenuCtrlMask()

Return the CTRL key mask used for Menu shortcut.

getSystemCtrlMask

@Deprecated
public static int getSystemCtrlMask()

Deprecated. Use getMenuCtrlMask() instead

getLocalGraphicsEnvironment

public static java.awt.GraphicsEnvironment getLocalGraphicsEnvironment()

getDefaultScreenDevice

public static java.awt.GraphicsDevice getDefaultScreenDevice()

Return the default screen device.

getDefaultGraphicsConfiguration

public static java.awt.GraphicsConfiguration getDefaultGraphicsConfiguration()

Return the default graphics configuration.

getSystemGraphicsConfiguration

@Deprecated
public static java.awt.GraphicsConfiguration getSystemGraphicsConfiguration()

Deprecated. Use getDefaultGraphicsConfiguration() instead.

getScreenDevices

public static java.util.List<java.awt.GraphicsDevice> getScreenDevices()

Return all available screen devices.

getScreenDeviceCount

public static int getScreenDeviceCount()

Return the number of screen device.

getScreenDevice

public static java.awt.GraphicsDevice getScreenDevice(int index)

Return the screen device corresponding to specified index.

getScreenDevices

public static java.util.List<java.awt.GraphicsDevice> getScreenDevices(java.awt.Rectangle region)

Returns all screen device intersecting the given region.
Can return an empty list if given region do not intersect any screen device.

getScreenDevice

public static java.awt.GraphicsDevice getScreenDevice(java.awt.Rectangle region)

Returns the main screen device corresponding to the given region.
If the given region intersect multiple screen, it return screen containing the largest area.
Can return null if given region do not intersect any screen device.

getScreenDevice

public static java.awt.GraphicsDevice getScreenDevice(java.awt.Point position)

Returns the screen device corresponding to the given position.
Can return null if given position is not located in any screen device.

isHeadLess

public static boolean isHeadLess()

Returns true if current system is "head less" (no screen output device).

getContextClassLoader

public static java.lang.ClassLoader getContextClassLoader()

getSystemClassLoader

public static java.lang.ClassLoader getSystemClassLoader()

getSystemBufferCapabilities

public static java.awt.BufferCapabilities getSystemBufferCapabilities()

getSystemImageCapabilities

public static java.awt.ImageCapabilities getSystemImageCapabilities()

getSystemColorModel

public static java.awt.image.ColorModel getSystemColorModel()

getSystemColorModel

public static java.awt.image.ColorModel getSystemColorModel(int transparency)

getScreenBounds

public static java.awt.Rectangle getScreenBounds(java.awt.GraphicsDevice graphicsDevice,
                                 boolean removeInsets)

Return bounds for specified screen.

Parameters:

removeInsets - remove any existing taskbars and menubars from the result

getDesktopBounds

public static java.awt.Rectangle getDesktopBounds(boolean removeInsets)

Return the entire desktop bounds (take multi screens in account).

Parameters:

removeInsets - remove any existing taskbars and menubars from the result

getDesktopBounds

public static java.awt.Rectangle getDesktopBounds()

Return the entire desktop bounds (take multi screens in account)

See Also:

getDesktopBounds(boolean)

getMaximumWindowBounds

public static java.awt.Rectangle getMaximumWindowBounds()

GraphicsEnvironment.getMaximumWindowBounds()

getSystemDisplayMode

public static java.awt.DisplayMode getSystemDisplayMode()

GraphicsDevice.getDisplayMode()

getAvailableProcessors

@Deprecated
public static int getAvailableProcessors()

Deprecated. Use getNumberOfCPUs() instead

getNumberOfCPUs

public static int getNumberOfCPUs()

Return total number of processors or cores available to the JVM (same as system)

getJavaFreeMemory

public static long getJavaFreeMemory()

Return total amount of free memory available to the JVM (in bytes)

getJavaMaxMemory

public static long getJavaMaxMemory()

Return maximum amount of memory the JVM will attempt to use (in bytes)

getJavaTotalMemory

@Deprecated
public static long getJavaTotalMemory()

Deprecated. Use getJavaAllocatedMemory() instead.

getJavaAllocatedMemory

public static long getJavaAllocatedMemory()

Return memory currently allocated by the JVM (in bytes)

getJavaUsedMemory

public static long getJavaUsedMemory()

Return actual memory used by the JVM (in bytes)

getTotalMemory

public static long getTotalMemory()

Return total physic memory of system (in bytes)

getSystemTotalMemory

@Deprecated
public static long getSystemTotalMemory()

Deprecated. Use getTotalMemory() instead

getFreeMemory

public static long getFreeMemory()

Return free physic memory of system (in bytes)

getSystemFreeMemory

@Deprecated
public static long getSystemFreeMemory()

Deprecated. Use getFreeMemory() instead

getProcessCpuTime

public static long getProcessCpuTime()

Return system process CPU time

getSystemProcessCpuTime

@Deprecated
public static long getSystemProcessCpuTime()

Deprecated. Use getProcessCpuTime() instead

getCpuLoad

public static int getCpuLoad()

Return average CPU load of the application processes from the last call
(-1 if no available)

getSystemCpuLoad

@Deprecated
public static int getSystemCpuLoad()

Deprecated. Use getCpuLoad() instead

getUserName

public static java.lang.String getUserName()

Returns the user name.

getJavaName

public static java.lang.String getJavaName()

Returns the JVM name.

getJavaVersion

public static java.lang.String getJavaVersion()

Returns the JVM version.

getJavaVersionAsNumber

public static double getJavaVersionAsNumber()

Returns the JVM version in number format (ex: 6.091, 7.071, 8.151..)

getJavaVersionAsVersion

public static Version getJavaVersionAsVersion()

Returns the JVM integer version (ex: 6.0.91, 7.0.71, 8.0.151..)

getJavaArchDataModel

public static int getJavaArchDataModel()

Returns the JVM data architecture model.

getOSName

public static java.lang.String getOSName()

Returns the Operating System name.

getOSArch

public static java.lang.String getOSArch()

Returns the Operating System architecture name.

getOSVersion

public static java.lang.String getOSVersion()

Returns the Operating System version.

getOSNameId

public static java.lang.String getOSNameId()

Return an id OS string :

Windows system return SystemUtil.SYSTEM_WINDOWS
MAC OS return SystemUtil.SYSTEM_MAC_OS
Unix system return SystemUtil.SYSTEM_UNIX

An empty string is returned is OS is unknown.

getOSArchIdString

public static java.lang.String getOSArchIdString()

Return an id OS architecture string
example : "win32", "win64", "mac32", "mac64", "unix32"...
The bits number depends only from current installed JVM (32 or 64 bit) and not directly from host OS.
An empty string is returned if OS is unknown.

isLinkSupported

public static boolean isLinkSupported()

Returns true is the operating system support link (symbolic or not).

is32bits

public static boolean is32bits()

Returns true is the JVM is 32 bits.

is64bits

public static boolean is64bits()

Returns true is the JVM is 64 bits.

isWindow

@Deprecated
public static boolean isWindow()

Deprecated. Use isWindows() instead.

isWindows

public static boolean isWindows()

Returns true is the Operating System is Windows based.

isMac

public static boolean isMac()

Returns true is the Operating System is Mac OS based.

isUnix

public static boolean isUnix()

Returns true is the Operating System is Unix / Linux based.

isWindows64

public static boolean isWindows64()

Returns true is the Operating System is Windows 64 bits whatever is the JVM installed (32 or 64 bits).

getTempDirectory

public static java.lang.String getTempDirectory()

Returns default temporary directory.
ex:
c:/temp
/tmp
Same as FileUtil.getTempDirectory()

getTempLibraryDirectory

public static java.lang.String getTempLibraryDirectory()

Returns temporary native library path (used to load native libraries from plugin)

addToJavaLibraryPath

public static boolean addToJavaLibraryPath(java.lang.String[] directories)

loadLibrary

public static void loadLibrary(java.lang.String dir,
               java.lang.String name)

Load the specified native library.

Parameters:

dir - directory from where we want to load the native library.

name - name of the library.
The filename of the library is automatically built depending the operating system.

loadLibrary

public static void loadLibrary(java.lang.String pathname)

Load the specified native library.

Parameters:

pathname - complete path or name of the library we want to load