ObjectInputStream.GetField
public
static
abstract
class
ObjectInputStream.GetField
extends Object
Provide access to the persistent fields read from the input stream.
Summary
Public methods |
|---|
abstract
boolean
|
defaulted(String name)
Return true if the named field is defaulted and has no value in this
stream.
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abstract
boolean
|
get(String name, boolean val)
Get the value of the named boolean field from the persistent field.
|
abstract
byte
|
get(String name, byte val)
Get the value of the named byte 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
char
|
get(String name, char val)
Get the value of the named char 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
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
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
ObjectStreamClass
|
getObjectStreamClass()
Get the ObjectStreamClass that describes the fields in the stream.
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Inherited methods |
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 From
class
java.lang.Object
Object
|
clone()
Creates and returns a copy of this object.
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boolean
|
equals(Object obj)
Indicates whether some other object is "equal to" this one.
|
void
|
finalize()
Called by the garbage collector on an object when garbage collection
determines that there are no more references to the object.
|
final
Class<?>
|
getClass()
Returns the runtime class of this Object.
|
int
|
hashCode()
Returns a hash code value for the object.
|
final
void
|
notify()
Wakes up a single thread that is waiting on this object's
monitor.
|
final
void
|
notifyAll()
Wakes up all threads that are waiting on this object's monitor.
|
String
|
toString()
Returns a string representation of the object.
|
final
void
|
wait(long millis, int nanos)
Causes the current thread to wait until another thread invokes the
notify() method or the
notifyAll() method for this object, or
some other thread interrupts the current thread, or a certain
amount of real time has elapsed.
|
final
void
|
wait(long millis)
Causes the current thread to wait until either another thread invokes the
notify() method or the
notifyAll() method for this object, or a
specified amount of time has elapsed.
|
final
void
|
wait()
Causes the current thread to wait until another thread invokes the
notify() method or the
notifyAll() method for this object.
|
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Public constructors
ObjectInputStream.GetField
ObjectInputStream.GetField ()
Public methods
defaulted
boolean defaulted (String name)
Return true if the named field is defaulted and has no value in this
stream.
| Parameters |
|---|
name |
String:
the name of the field |
| Returns |
|---|
boolean |
true, if and only if the named field is defaulted |
get
boolean get (String name,
boolean val)
Get the value of the named boolean field from the persistent field.
| Parameters |
|---|
name |
String:
the name of the field |
val |
boolean:
the default value to use if name does not
have a value |
| Returns |
|---|
boolean |
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
|
get
byte get (String name,
byte val)
Get the value of the named byte field from the persistent field.
| Parameters |
|---|
name |
String:
the name of the field |
val |
byte:
the default value to use if name does not
have a value |
| Returns |
|---|
byte |
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
|
get
short get (String name,
short val)
Get the value of the named short field from the persistent field.
| Parameters |
|---|
name |
String:
the name of the field |
val |
short:
the default value to use if name does not
have a value |
| Returns |
|---|
short |
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
|
get
char get (String name,
char val)
Get the value of the named char field from the persistent field.
| Parameters |
|---|
name |
String:
the name of the field |
val |
char:
the default value to use if name does not
have a value |
| Returns |
|---|
char |
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
|
get
int get (String name,
int val)
Get the value of the named int field from the persistent field.
| Parameters |
|---|
name |
String:
the name of the field |
val |
int:
the default value to use if name does not
have a value |
| Returns |
|---|
int |
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
|
get
float get (String name,
float val)
Get the value of the named float field from the persistent field.
| Parameters |
|---|
name |
String:
the name of the field |
val |
float:
the default value to use if name does not
have a value |
| Returns |
|---|
float |
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
|
get
double get (String name,
double val)
Get the value of the named double field from the persistent field.
| Parameters |
|---|
name |
String:
the name of the field |
val |
double:
the default value to use if name does not
have a value |
| Returns |
|---|
double |
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
|
get
long get (String name,
long val)
Get the value of the named long field from the persistent field.
| Parameters |
|---|
name |
String:
the name of the field |
val |
long:
the default value to use if name does not
have a value |
| Returns |
|---|
long |
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
|
get
Object get (String name,
Object val)
Get the value of the named Object field from the persistent field.
| Parameters |
|---|
name |
String:
the name of the field |
val |
Object:
the default value to use if name does not
have a value |
| Returns |
|---|
Object |
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
|
getObjectStreamClass
ObjectStreamClass getObjectStreamClass ()
Get the ObjectStreamClass that describes the fields in the stream.
| Returns |
|---|
ObjectStreamClass |
the descriptor class that describes the serializable fields
|
Developers