IT. Expert System.

Enclosing class:

ObjectInputStream

public abstract static class ObjectInputStream.GetField
extends Object

• Constructor Summary

  Constructors

  Constructor and Description
  ObjectInputStream.GetField()

• Method Summary

  Methods

  Modifier and Type	Method and Description
  abstract boolean	defaulted(String name) Indicates if the field identified by name is defaulted.
  abstract boolean	get(String name, boolean defaultValue) Gets the value of the boolean field identified by name from the persistent field.
  abstract byte	get(String name, byte defaultValue) Gets the value of the byte field identified by name from the persistent field.
  abstract char	get(String name, char defaultValue) Gets the value of the character field identified by name from the persistent field.
  abstract double	get(String name, double defaultValue) Gets the value of the double field identified by name from the persistent field.
  abstract float	get(String name, float defaultValue) Gets the value of the float field identified by name from the persistent field.
  abstract int	get(String name, int defaultValue) Gets the value of the integer field identified by name from the persistent field.
  abstract long	get(String name, long defaultValue) Gets the value of the long field identified by name from the persistent field.
  abstract Object	get(String name, Object defaultValue) Gets the value of the object field identified by name from the persistent field.
  abstract short	get(String name, short defaultValue) Gets the value of the short field identified by name from the persistent field.
  abstract ObjectStreamClass	getObjectStreamClass() Gets the ObjectStreamClass that describes a field.

  • Methods inherited from class java.lang.Object

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

• Constructor Detail

  • ObjectInputStream.GetField

    public ObjectInputStream.GetField()

• Method Detail

  • getObjectStreamClass

    public abstract ObjectStreamClass getObjectStreamClass()

    Gets the ObjectStreamClass that describes a field.

    Returns:

    the descriptor class for a serialized field.

  • defaulted

    public abstract boolean defaulted(String name)
                               throws IOException,
                                      IllegalArgumentException

    Indicates if the field identified by name is defaulted. This means that it has no value in this stream.

    Parameters:

    name - the name of the field to check.

    Returns:

    true if the field is defaulted, false otherwise.

    Throws:

    IllegalArgumentException - if name does not identify a serializable field.

    IOException - if an error occurs while reading from the source input stream.

  • get

    public abstract boolean get(String name,
              boolean defaultValue)
                         throws IOException,
                                IllegalArgumentException

    Gets the value of the boolean field identified by name from the persistent field.

    Parameters:

    name - the name of the field to get.

    defaultValue - the default value that is used if the field does not have a value when read from the source stream.

    Returns:

    the value of the field identified by name.

    Throws:

    IOException - if an error occurs while reading from the source input stream.

    IllegalArgumentException - if the type of the field identified by name is not boolean.

  • get

    public abstract char get(String name,
           char defaultValue)
                      throws IOException,
                             IllegalArgumentException

    Gets the value of the character field identified by name from the persistent field.

    Parameters:

    name - the name of the field to get.

    defaultValue - the default value that is used if the field does not have a value when read from the source stream.

    Returns:

    the value of the field identified by name.

    Throws:

    IOException - if an error occurs while reading from the source input stream.

    IllegalArgumentException - if the type of the field identified by name is not char.

  • get

    public abstract byte get(String name,
           byte defaultValue)
                      throws IOException,
                             IllegalArgumentException

    Gets the value of the byte field identified by name from the persistent field.

    Parameters:

    name - the name of the field to get.

    defaultValue - the default value that is used if the field does not have a value when read from the source stream.

    Returns:

    the value of the field identified by name.

    Throws:

    IOException - if an error occurs while reading from the source input stream.

    IllegalArgumentException - if the type of the field identified by name is not byte.

  • get

    public abstract short get(String name,
            short defaultValue)
                       throws IOException,
                              IllegalArgumentException

    Gets the value of the short field identified by name from the persistent field.

    Parameters:

    name - the name of the field to get.

    defaultValue - the default value that is used if the field does not have a value when read from the source stream.

    Returns:

    the value of the field identified by name.

    Throws:

    IOException - if an error occurs while reading from the source input stream.

    IllegalArgumentException - if the type of the field identified by name is not short.

  • get

    public abstract int get(String name,
          int defaultValue)
                     throws IOException,
                            IllegalArgumentException

    Gets the value of the integer field identified by name from the persistent field.

    Parameters:

    name - the name of the field to get.

    defaultValue - the default value that is used if the field does not have a value when read from the source stream.

    Returns:

    the value of the field identified by name.

    Throws:

    IOException - if an error occurs while reading from the source input stream.

    IllegalArgumentException - if the type of the field identified by name is not int.

  • get

    public abstract long get(String name,
           long defaultValue)
                      throws IOException,
                             IllegalArgumentException

    Gets the value of the long field identified by name from the persistent field.

    Parameters:

    name - the name of the field to get.

    defaultValue - the default value that is used if the field does not have a value when read from the source stream.

    Returns:

    the value of the field identified by name.

    Throws:

    IOException - if an error occurs while reading from the source input stream.

    IllegalArgumentException - if the type of the field identified by name is not long.

  • get

    public abstract float get(String name,
            float defaultValue)
                       throws IOException,
                              IllegalArgumentException

    Gets the value of the float field identified by name from the persistent field.

    Parameters:

    name - the name of the field to get.

    defaultValue - the default value that is used if the field does not have a value when read from the source stream.

    Returns:

    the value of the field identified by name.

    Throws:

    IOException - if an error occurs while reading from the source input stream.

    IllegalArgumentException - if the type of the field identified by float is not char.

  • get

    public abstract double get(String name,
             double defaultValue)
                        throws IOException,
                               IllegalArgumentException

    Gets the value of the double field identified by name from the persistent field.

    Parameters:

    name - the name of the field to get.

    defaultValue - the default value that is used if the field does not have a value when read from the source stream.

    Returns:

    the value of the field identified by name.

    Throws:

    IOException - if an error occurs while reading from the source input stream.

    IllegalArgumentException - if the type of the field identified by name is not double.

  • get

    public abstract Object get(String name,
             Object defaultValue)
                        throws IOException,
                               IllegalArgumentException

    Gets the value of the object field identified by name from the persistent field.

    Parameters:

    name - the name of the field to get.

    defaultValue - the default value that is used if the field does not have a value when read from the source stream.

    Returns:

    the value of the field identified by name.

    Throws:

    IOException - if an error occurs while reading from the source input stream.

    IllegalArgumentException - if the type of the field identified by name is not Object.