org.jutils.jprocesses

Class JProcesses

java.lang.Object

org.jutils.jprocesses.JProcesses

public class JProcesses
extends Object

Class that gives access to Processes details.

JProcesses allows to interact with system processes. It is possible to list all alive processes, kill them or change the priority.

Author:

Javier Garcia Alonso

Method Summary

Modifier and Type	Method and Description
static JProcessesResponse	changePriority(int pid, int newPriority) Static method that changes the priority of a process If the process does not finish with this method, try with the stronger killProcess() For further details see ProcessInfo
JProcesses	fastMode() Enables the fast mode.
JProcesses	fastMode(boolean enabled) Enables/disables the fast mode.
static JProcesses	get() Gets the JProcesses instance.
static ProcessInfo	getProcess(int pid) Static method that returns the information of a process Some information is retrieved: PID Name Used memory Date/time Priority [...]
static List<ProcessInfo>	getProcessList() Convenience static method that returns the list of processes that match with the provided name.
static List<ProcessInfo>	getProcessList(String name) Convenience static method that returns the list of processes that match with the provided name.
static JProcessesResponse	killProcess(int pid) Static method that kills a process abruptly (forced mode) For further details see ProcessInfo
static JProcessesResponse	killProcessGracefully(int pid) Static method that kills a process, letting it the necessary time to finish If the process does not finish with this method, try with the stronger killProcess() For further details see ProcessInfo
List<ProcessInfo>	listProcesses() Return the list of processes running in the system.
List<ProcessInfo>	listProcesses(String name) Return the list of processes that match with the provided name.

Methods inherited from class java.lang.Object

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

Method Detail

get

public static JProcesses get()

Gets the JProcesses instance.
This method creates a new instance each time.

Returns:

JProcesses instance

fastMode

public JProcesses fastMode()

Enables the fast mode.
In this mode JProcesses does not try to retrieve time consuming data as the use percentage or the owner of the process in Windows implementation.
This flag has no effect in Linux implementation as it is fast enough.

Returns:

JProcesses instance

fastMode

public JProcesses fastMode(boolean enabled)

Enables/disables the fast mode.
In this mode JProcesses does not try to retrieve time consuming data as the use percentage or the owner of the process in Windows implementation.
This flag has no effect in Linux implementation as it is fast enough.

Parameters:

enabled - boolean true or false

Returns:

JProcesses instance

listProcesses

public List<ProcessInfo> listProcesses()

Return the list of processes running in the system.
For each process some information is retrieved:

• PID
• Name
• Used memory
• Date/time
• Priority

[...]

For further details see ProcessInfo

Returns:

List of processes

listProcesses

public List<ProcessInfo> listProcesses(String name)

Return the list of processes that match with the provided name.
For each process some information is retrieved:

• PID
• Name
• Used memory
• Date/time
• Priority

[...]

For further details see ProcessInfo

Parameters:

name - The name of the searched process

Returns:

List of found processes

getProcessList

public static List<ProcessInfo> getProcessList()

Convenience static method that returns the list of processes that match with the provided name.
For each process some information is retrieved:

• PID
• Name
• Used memory
• Date/time
• Priority

[...]

For further details see ProcessInfo

Returns:

List of found processes

getProcessList

public static List<ProcessInfo> getProcessList(String name)

Convenience static method that returns the list of processes that match with the provided name.
For each process some information is retrieved:

• PID
• Name
• Used memory
• Date/time
• Priority

[...]

For further details see ProcessInfo

Parameters:

name - The name of the searched process

Returns:

List of found processes

getProcess

public static ProcessInfo getProcess(int pid)

Static method that returns the information of a process
Some information is retrieved:

• PID
• Name
• Used memory
• Date/time
• Priority

[...]

For further details see ProcessInfo

Parameters:

pid - The PID of the searched process

Returns:

JProcesses object with the information of the process

killProcess

public static JProcessesResponse killProcess(int pid)

Static method that kills a process abruptly (forced mode)
For further details see ProcessInfo

Parameters:

pid - The PID of the process to kill

Returns:

JProcessesResponse response object that contains information about the result of the operation

killProcessGracefully

public static JProcessesResponse killProcessGracefully(int pid)

Static method that kills a process, letting it the necessary time to finish
If the process does not finish with this method, try with the stronger killProcess()

For further details see ProcessInfo

Parameters:

pid - The PID of the process to kill

Returns:

JProcessesResponse response object that contains information about the result of the operation

changePriority

public static JProcessesResponse changePriority(int pid,
                                                int newPriority)

Static method that changes the priority of a process
If the process does not finish with this method, try with the stronger killProcess()

For further details see ProcessInfo

Parameters:

pid - the PID of the process tochange priority

newPriority - integer with the new version. For windows you can use the helper constants at WindowsPriority

Returns:

JProcessesResponse response object that contains information about the result of the operation