public static abstract class

ObjectInputStream.GetField

extends Object
java.lang.Object
   ↳ java.io.ObjectInputStream.GetField

Class Overview

Provide access to the persistent fields read from the input stream.

Summary

Public Constructors
ObjectInputStream.GetField()
Public Methods
abstract boolean defaulted(String name)
Return true if the named field is defaulted and has no value in this stream.
abstract byte get(String name, byte val)
Get the value of the named byte field from the persistent field.
abstract long get(String name, long val)
Get the value of the named long field from the persistent field.
abstract Object get(String name, Object val)
Get the value of the named Object field from the persistent field.
abstract int get(String name, int val)
Get the value of the named int field from the persistent field.
abstract short get(String name, short val)
Get the value of the named short field from the persistent field.
abstract float get(String name, float val)
Get the value of the named float field from the persistent field.
abstract double get(String name, double val)
Get the value of the named double field from the persistent field.
abstract boolean get(String name, boolean val)
Get the value of the named boolean field from the persistent field.
abstract char get(String name, char val)
Get the value of the named char field from the persistent field.
abstract ObjectStreamClass getObjectStreamClass()
Get the ObjectStreamClass that describes the fields in the stream.
[Expand]
Inherited Methods
From class java.lang.Object

Public Constructors

public ObjectInputStream.GetField ()

Public Methods

public abstract boolean defaulted (String name)

Return true if the named field is defaulted and has no value in this stream.

Parameters
name the name of the field
Returns
  • true, if and only if the named field is defaulted
Throws
IOException if there are I/O errors while reading from the underlying InputStream
IllegalArgumentException if name does not correspond to a serializable field

public abstract byte get (String name, byte val)

Get the value of the named byte field from the persistent field.

Parameters
name the name of the field
val the default value to use if name does not have a value
Returns
  • the value of the named byte field
Throws
IOException if there are I/O errors while reading from the underlying InputStream
IllegalArgumentException if type of name is not serializable or if the field type is incorrect

public abstract long get (String name, long val)

Get the value of the named long field from the persistent field.

Parameters
name the name of the field
val the default value to use if name does not have a value
Returns
  • the value of the named long field
Throws
IOException if there are I/O errors while reading from the underlying InputStream
IllegalArgumentException if type of name is not serializable or if the field type is incorrect

public abstract Object get (String name, Object val)

Get the value of the named Object field from the persistent field.

Parameters
name the name of the field
val the default value to use if name does not have a value
Returns
  • the value of the named Object field
Throws
IOException if there are I/O errors while reading from the underlying InputStream
IllegalArgumentException if type of name is not serializable or if the field type is incorrect

public abstract int get (String name, int val)

Get the value of the named int field from the persistent field.

Parameters
name the name of the field
val the default value to use if name does not have a value
Returns
  • the value of the named int field
Throws
IOException if there are I/O errors while reading from the underlying InputStream
IllegalArgumentException if type of name is not serializable or if the field type is incorrect

public abstract short get (String name, short val)

Get the value of the named short field from the persistent field.

Parameters
name the name of the field
val the default value to use if name does not have a value
Returns
  • the value of the named short field
Throws
IOException if there are I/O errors while reading from the underlying InputStream
IllegalArgumentException if type of name is not serializable or if the field type is incorrect

public abstract float get (String name, float val)

Get the value of the named float field from the persistent field.

Parameters
name the name of the field
val the default value to use if name does not have a value
Returns
  • the value of the named float field
Throws
IOException if there are I/O errors while reading from the underlying InputStream
IllegalArgumentException if type of name is not serializable or if the field type is incorrect

public abstract double get (String name, double val)

Get the value of the named double field from the persistent field.

Parameters
name the name of the field
val the default value to use if name does not have a value
Returns
  • the value of the named double field
Throws
IOException if there are I/O errors while reading from the underlying InputStream
IllegalArgumentException if type of name is not serializable or if the field type is incorrect

public abstract boolean get (String name, boolean val)

Get the value of the named boolean field from the persistent field.

Parameters
name the name of the field
val the default value to use if name does not have a value
Returns
  • the value of the named boolean field
Throws
IOException if there are I/O errors while reading from the underlying InputStream
IllegalArgumentException if type of name is not serializable or if the field type is incorrect

public abstract char get (String name, char val)

Get the value of the named char field from the persistent field.

Parameters
name the name of the field
val the default value to use if name does not have a value
Returns
  • the value of the named char field
Throws
IOException if there are I/O errors while reading from the underlying InputStream
IllegalArgumentException if type of name is not serializable or if the field type is incorrect

public abstract ObjectStreamClass getObjectStreamClass ()

Get the ObjectStreamClass that describes the fields in the stream.

Returns
  • the descriptor class that describes the serializable fields