EnvironmentVariable

java.lang.Object
- com.ibm.as400.access.EnvironmentVariable

All Implemented Interfaces:

Serializable
```
public class EnvironmentVariable
extends Object
implements Serializable
```
Represents an IBM i system-level environment variable. An environment variable is uniquely identified by the system and the environment variable name. Environment variable names are case sensitive and cannot contain spaces or equals signs (=).
This class can only access system-level environment variables. You must have *JOBCTL special authority to add, change, or delete system-level environment variables.
Every environment variable has a CCSID associated with it which describes the CCSID in which its contents are stored. The default CCSID is that of the current job.
Note that environment variables are different than system values, although they are often used for the same purpose. See SystemValue for more information on how to access system values.
The environment variable value and CCSID are cached after being read once. Call refreshValue() to force the value and CCSID to be refreshed.
The following example creates two EnvironmentVariables and sets and gets their values.
```
    AS400 system = new AS400("mysystem");
    EnvironmentVariable fg = new EnvironmentVariable(system, "FOREGROUND");
    fg.setValue("RED");

    EnvironmentVariable bg = new EnvironmentVariable(system, "BACKGROUND");
    String background = bg.getValue();
 
```
See Also:
EnvironmentVariableList, Serialized Form

Constructor Summary

Constructors
Constructor and Description
`EnvironmentVariable()` Constructs an EnvironmentVariable object.
`EnvironmentVariable(AS400 system)` Constructs an EnvironmentVariable object.
`EnvironmentVariable(AS400 system, String name)` Constructs an EnvironmentVariable object.

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`addPropertyChangeListener(PropertyChangeListener listener)` Adds a PropertyChangeListener.
`void`	`delete()` Deletes the environment variable.
`int`	`getCCSID()` Returns the environment variable CCSID.
`String`	`getName()` Returns the environment variable name.
`String`	`getName(int stringType)` Returns the environment variable name.
`AS400`	`getSystem()` Returns the system on which the environment variable exists.
`String`	`getValue()` Returns the value of the environment variable.
`String`	`getValue(int stringType)` Returns the value of the environment variable.
`void`	`refreshValue()` Refreshes the environment variable value and CCSID.
`void`	`removePropertyChangeListener(PropertyChangeListener listener)` Removes the PropertyChangeListener.
`void`	`setName(String name)` Sets the environment variable name.
`void`	`setName(String name, int stringType)` Sets the environment variable name.
`void`	`setSystem(AS400 system)` Sets the system for the environment variable.
`void`	`setValue(String value)` Sets the value of the environment variable.
`void`	`setValue(String value, int ccsid)` Sets the value of the environment variable.
`void`	`setValue(String value, int ccsid, int stringType)` Sets the value of the environment variable.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - EnvironmentVariable
```
public EnvironmentVariable()
```
    Constructs an EnvironmentVariable object.
  - EnvironmentVariable
```
public EnvironmentVariable(AS400 system)
```
    Constructs an EnvironmentVariable object.
    
    Parameters:
    system - The system on which the environment variable exists.
  - EnvironmentVariable
```
public EnvironmentVariable(AS400 system,
                   String name)
```
    Constructs an EnvironmentVariable object.
    Environment variable names are case sensitive and cannot contain spaces or equals signs (=).
    
    Parameters:
    system - The system on which the environment variable exists.
    name - The environment variable name.
- Method Detail
  - addPropertyChangeListener
```
public void addPropertyChangeListener(PropertyChangeListener listener)
```
    Adds a PropertyChangeListener. The specified PropertyChangeListener's propertyChange() method will be called each time the value of any bound property is changed.
    
    Parameters:
    listener - The listener object.
  - delete
```
public void delete()
            throws AS400SecurityException,
                   ErrorCompletingRequestException,
                   InterruptedException,
                   IOException,
                   ObjectDoesNotExistException
```
    Deletes the environment variable. You must have *JOBCTL special authority to delete system-level environment variables.
    
    Throws:
    
    AS400SecurityException - If a security or authority error occurs.
    
    ErrorCompletingRequestException - If an error occurs before the request is completed.
    
    InterruptedException - If this thread is interrupted.
    
    IOException - If an error occurs while communicating with the system.
    
    ObjectDoesNotExistException - If the object does not exist on the system.
  - getCCSID
```
public int getCCSID()
             throws AS400SecurityException,
                    ErrorCompletingRequestException,
                    InterruptedException,
                    IOException,
                    ObjectDoesNotExistException
```
    Returns the environment variable CCSID.
    
    Returns:
    The environment variable CCSID.
    
    Throws:
    
    AS400SecurityException - If a security or authority error occurs.
    
    ErrorCompletingRequestException - If an error occurs before the request is completed.
    
    InterruptedException - If this thread is interrupted.
    
    IOException - If an error occurs while communicating with the system.
    
    ObjectDoesNotExistException - If the object does not exist on the system.
  - getName
```
public String getName()
```
    Returns the environment variable name.
    
    Returns:
    The environment variable name.
  - getName
```
public String getName(int stringType)
```
    Returns the environment variable name.
    
    Parameters:
    stringType - The environment variable bidi string type, as defined by the CDRA (Character Data Representation Architecture). See BidiStringType for more information and valid values.
    
    Returns:
    The environment variable name.
  - getSystem
```
public AS400 getSystem()
```
    Returns the system on which the environment variable exists.
    
    Returns:
    The system on which the environment variable exists. If the system has not been set, null is returned.
  - getValue
```
public String getValue()
                throws AS400SecurityException,
                       ErrorCompletingRequestException,
                       InterruptedException,
                       IOException,
                       ObjectDoesNotExistException
```
    Returns the value of the environment variable.
    
    Returns:
    The value.
    
    Throws:
    
    AS400SecurityException - If a security or authority error occurs.
    
    ErrorCompletingRequestException - If an error occurs before the request is completed.
    
    InterruptedException - If this thread is interrupted.
    
    IOException - If an error occurs while communicating with the system.
    
    ObjectDoesNotExistException - If the object does not exist on the system.
  - getValue
```
public String getValue(int stringType)
                throws AS400SecurityException,
                       ErrorCompletingRequestException,
                       InterruptedException,
                       IOException,
                       ObjectDoesNotExistException
```
    Returns the value of the environment variable.
    
    Parameters:
    stringType - The environment variable bidi string type, as defined by the CDRA (Character Data Representation Architecture). See BidiStringType for more information and valid values.
    
    Returns:
    The value.
    
    Throws:
    
    AS400SecurityException - If a security or authority error occurs.
    
    ErrorCompletingRequestException - If an error occurs before the request is completed.
    
    InterruptedException - If this thread is interrupted.
    
    IOException - If an error occurs while communicating with the system.
    
    ObjectDoesNotExistException - If the object does not exist on the system.
  - refreshValue
```
public void refreshValue()
                  throws AS400SecurityException,
                         ErrorCompletingRequestException,
                         InterruptedException,
                         IOException,
                         ObjectDoesNotExistException
```
    Refreshes the environment variable value and CCSID.
    
    Throws:
    
    AS400SecurityException - If a security or authority error occurs.
    
    ErrorCompletingRequestException - If an error occurs before the request is completed.
    
    InterruptedException - If this thread is interrupted.
    
    IOException - If an error occurs while communicating with the system.
    
    ObjectDoesNotExistException - If the object does not exist on the system.
  - removePropertyChangeListener
```
public void removePropertyChangeListener(PropertyChangeListener listener)
```
    Removes the PropertyChangeListener.
    
    Parameters:
    listener - The listener object.
  - setName
```
public void setName(String name)
```
    Sets the environment variable name. This does not change the environment variable name on the system. Instead, it changes the environment variable to which this EnvironmentVariable object references.
    Environment variable names are case sensitive and cannot contain spaces or equals signs (=).
    
    Parameters:
    name - The environment variable name.
  - setName
```
public void setName(String name,
           int stringType)
```
    Sets the environment variable name. This does not change the environment variable name on the system. Instead, it changes the environment variable to which this EnvironmentVariable object references.
    Environment variable names are case sensitive and cannot contain spaces or equals signs (=).
    
    Parameters:
    name - The environment variable name.
    stringType - The environment variable bidi string type, as defined by the CDRA (Character Data Representation Architecture). See BidiStringType for more information and valid values.
  - setSystem
```
public void setSystem(AS400 system)
```
    Sets the system for the environment variable. The system cannot be changed once a connection is made to the system.
    
    Parameters:
    system - The system on which the environment variable exists.
  - setValue
```
public void setValue(String value)
              throws AS400SecurityException,
                     ErrorCompletingRequestException,
                     InterruptedException,
                     IOException,
                     ObjectDoesNotExistException
```
    Sets the value of the environment variable. The CCSID will be set to the job CCSID. You must have *JOBCTL special authority to add or change system-level environment variables.
    
    Parameters:
    value - The value.
    
    Throws:
    
    AS400SecurityException - If a security or authority error occurs.
    
    ErrorCompletingRequestException - If an error occurs before the request is completed.
    
    InterruptedException - If this thread is interrupted.
    
    IOException - If an error occurs while communicating with the system.
    
    ObjectDoesNotExistException - If the object does not exist on the system.
  - setValue
```
public void setValue(String value,
            int ccsid)
              throws AS400SecurityException,
                     ErrorCompletingRequestException,
                     InterruptedException,
                     IOException,
                     ObjectDoesNotExistException
```
    Sets the value of the environment variable. You must have *JOBCTL special authority to add or change system-level environment variables.
    Parameters:
    value - The value.
    ccsid - The CCSID. Possible values are:
    
    0 - Use the job CCSID.
    65535 - Do not translate.
    Any valid CCSID
    Throws:
    
    AS400SecurityException - If a security or authority error occurs.
    
    ErrorCompletingRequestException - If an error occurs before the request is completed.
    
    InterruptedException - If this thread is interrupted.
    
    IOException - If an error occurs while communicating with the system.
    
    ObjectDoesNotExistException - If the object does not exist on the system.
  - setValue
```
public void setValue(String value,
            int ccsid,
            int stringType)
              throws AS400SecurityException,
                     ErrorCompletingRequestException,
                     InterruptedException,
                     IOException,
                     ObjectDoesNotExistException
```
    Sets the value of the environment variable. You must have *JOBCTL special authority to add or change system-level environment variables.
    Parameters:
    value - The value.
    ccsid - The CCSID. Possible values are:
    
    0 - Use the job CCSID.
    65535 - Do not translate.
    Any valid CCSID
    stringType - The environment variable bidi string type, as defined by the CDRA (Character Data Representation Architecture). See BidiStringType for more information and valid values.
    
    Throws:
    
    AS400SecurityException - If a security or authority error occurs.
    
    ErrorCompletingRequestException - If an error occurs before the request is completed.
    
    InterruptedException - If this thread is interrupted.
    
    IOException - If an error occurs while communicating with the system.
    
    ObjectDoesNotExistException - If the object does not exist on the system.

Methods inherited from class java.lang.Object

EnvironmentVariable

EnvironmentVariable

EnvironmentVariable

addPropertyChangeListener

delete

getCCSID

getName

getName

getSystem

getValue

getValue

refreshValue

removePropertyChangeListener

setName

setName

setSystem

setValue

setValue

setValue