- java.lang.Object
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- java.io.ObjectInputStream.GetField
 
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- Enclosing class:
- ObjectInputStream
 
 public abstract static class ObjectInputStream.GetField extends Object Provide access to the persistent fields read from the input stream.
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Constructor SummaryConstructors Constructor Description GetField()
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Method SummaryAll Methods Instance Methods Abstract Methods Modifier and Type Method Description abstract booleandefaulted(String name)Return true if the named field is defaulted and has no value in this stream.abstract booleanget(String name, boolean val)Get the value of the named boolean field from the persistent field.abstract byteget(String name, byte val)Get the value of the named byte field from the persistent field.abstract charget(String name, char val)Get the value of the named char field from the persistent field.abstract doubleget(String name, double val)Get the value of the named double field from the persistent field.abstract floatget(String name, float val)Get the value of the named float field from the persistent field.abstract intget(String name, int val)Get the value of the named int field from the persistent field.abstract longget(String name, long val)Get the value of the named long field from the persistent field.abstract shortget(String name, short val)Get the value of the named short field from the persistent field.abstract Objectget(String name, Object val)Get the value of the named Object field from the persistent field.abstract ObjectStreamClassgetObjectStreamClass()Get the ObjectStreamClass that describes the fields in the stream.
 
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Method Detail- 
getObjectStreamClasspublic abstract ObjectStreamClass getObjectStreamClass() Get the ObjectStreamClass that describes the fields in the stream.- Returns:
- the descriptor class that describes the serializable fields
 
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defaultedpublic abstract boolean defaulted(String name) throws IOException 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- namedoes not correspond to a serializable field
 
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getpublic abstract boolean get(String name, boolean val) throws IOException 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- namedoes not have a value
- Returns:
- the value of the named booleanfield
- Throws:
- IOException- if there are I/O errors while reading from the underlying- InputStream
- IllegalArgumentException- if type of- nameis not serializable or if the field type is incorrect
 
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getpublic abstract byte get(String name, byte val) throws IOException 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- namedoes not have a value
- Returns:
- the value of the named bytefield
- Throws:
- IOException- if there are I/O errors while reading from the underlying- InputStream
- IllegalArgumentException- if type of- nameis not serializable or if the field type is incorrect
 
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getpublic abstract char get(String name, char val) throws IOException 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- namedoes not have a value
- Returns:
- the value of the named charfield
- Throws:
- IOException- if there are I/O errors while reading from the underlying- InputStream
- IllegalArgumentException- if type of- nameis not serializable or if the field type is incorrect
 
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getpublic abstract short get(String name, short val) throws IOException 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- namedoes not have a value
- Returns:
- the value of the named shortfield
- Throws:
- IOException- if there are I/O errors while reading from the underlying- InputStream
- IllegalArgumentException- if type of- nameis not serializable or if the field type is incorrect
 
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getpublic abstract int get(String name, int val) throws IOException 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- namedoes not have a value
- Returns:
- the value of the named intfield
- Throws:
- IOException- if there are I/O errors while reading from the underlying- InputStream
- IllegalArgumentException- if type of- nameis not serializable or if the field type is incorrect
 
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getpublic abstract long get(String name, long val) throws IOException 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- namedoes not have a value
- Returns:
- the value of the named longfield
- Throws:
- IOException- if there are I/O errors while reading from the underlying- InputStream
- IllegalArgumentException- if type of- nameis not serializable or if the field type is incorrect
 
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getpublic abstract float get(String name, float val) throws IOException 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- namedoes not have a value
- Returns:
- the value of the named floatfield
- Throws:
- IOException- if there are I/O errors while reading from the underlying- InputStream
- IllegalArgumentException- if type of- nameis not serializable or if the field type is incorrect
 
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getpublic abstract double get(String name, double val) throws IOException 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- namedoes not have a value
- Returns:
- the value of the named doublefield
- Throws:
- IOException- if there are I/O errors while reading from the underlying- InputStream
- IllegalArgumentException- if type of- nameis not serializable or if the field type is incorrect
 
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getpublic abstract Object get(String name, Object val) throws IOException 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- namedoes not have a value
- Returns:
- the value of the named Objectfield
- Throws:
- IOException- if there are I/O errors while reading from the underlying- InputStream
- IllegalArgumentException- if type of- nameis not serializable or if the field type is incorrect
 
 
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