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Class ObjectOutputStream.PutField

java.lang.Object

java.io.ObjectOutputStream.PutField

Enclosing class:: ObjectOutputStream

public abstract static class ObjectOutputStream.PutField extends Object

Provide programmatic access to the persistent fields to be written to ObjectOutput.

Since:: 1.2

Constructor Summary

Constructor	Description
`PutField()`	Constructor for subclasses to call.

Method Summary

Modifier and Type	Method	Description
`abstract void`	`put(String name, boolean val)`	Put the value of the named boolean field into the persistent field.
`abstract void`	`put(String name, byte val)`	Put the value of the named byte field into the persistent field.
`abstract void`	`put(String name, char val)`	Put the value of the named char field into the persistent field.
`abstract void`	`put(String name, double val)`	Put the value of the named double field into the persistent field.
`abstract void`	`put(String name, float val)`	Put the value of the named float field into the persistent field.
`abstract void`	`put(String name, int val)`	Put the value of the named int field into the persistent field.
`abstract void`	`put(String name, long val)`	Put the value of the named long field into the persistent field.
`abstract void`	`put(String name, short val)`	Put the value of the named short field into the persistent field.
`abstract void`	`put(String name, Object val)`	Put the value of the named Object field into the persistent field.
`abstract void`	`write(ObjectOutput out)`	Deprecated. This method does not write the values contained by this `PutField` object in a proper format, and may result in corruption of the serialization stream.

Methods declared in class java.lang.Object

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

Constructor Details

PutField

public PutField()

Constructor for subclasses to call.

Method Details

put

public abstract void put(String name, boolean val)

Put the value of the named boolean field into the persistent field.

Parameters:: name - the name of the serializable field; val - the value to assign to the field
Throws:: IllegalArgumentException - if name does not match the name of a serializable field for the class whose fields are being written, or if the type of the named field is not boolean

put

public abstract void put(String name, byte val)

Put the value of the named byte field into the persistent field.

Parameters:: name - the name of the serializable field; val - the value to assign to the field
Throws:: IllegalArgumentException - if name does not match the name of a serializable field for the class whose fields are being written, or if the type of the named field is not byte

put

public abstract void put(String name, char val)

Put the value of the named char field into the persistent field.

Parameters:: name - the name of the serializable field; val - the value to assign to the field
Throws:: IllegalArgumentException - if name does not match the name of a serializable field for the class whose fields are being written, or if the type of the named field is not char

put

public abstract void put(String name, short val)

Put the value of the named short field into the persistent field.

Parameters:: name - the name of the serializable field; val - the value to assign to the field
Throws:: IllegalArgumentException - if name does not match the name of a serializable field for the class whose fields are being written, or if the type of the named field is not short

put

public abstract void put(String name, int val)

Put the value of the named int field into the persistent field.

Parameters:: name - the name of the serializable field; val - the value to assign to the field
Throws:: IllegalArgumentException - if name does not match the name of a serializable field for the class whose fields are being written, or if the type of the named field is not int

put

public abstract void put(String name, long val)

Put the value of the named long field into the persistent field.

Parameters:: name - the name of the serializable field; val - the value to assign to the field
Throws:: IllegalArgumentException - if name does not match the name of a serializable field for the class whose fields are being written, or if the type of the named field is not long

put

public abstract void put(String name, float val)

Put the value of the named float field into the persistent field.

Parameters:: name - the name of the serializable field; val - the value to assign to the field
Throws:: IllegalArgumentException - if name does not match the name of a serializable field for the class whose fields are being written, or if the type of the named field is not float

put

public abstract void put(String name, double val)

Put the value of the named double field into the persistent field.

Parameters:: name - the name of the serializable field; val - the value to assign to the field
Throws:: IllegalArgumentException - if name does not match the name of a serializable field for the class whose fields are being written, or if the type of the named field is not double

put

public abstract void put(String name, Object val)

Put the value of the named Object field into the persistent field.

Parameters:: name - the name of the serializable field; val - the value to assign to the field (which may be null)
Throws:: IllegalArgumentException - if name does not match the name of a serializable field for the class whose fields are being written, or if the type of the named field is not a reference type

write

@Deprecated public abstract void write(ObjectOutput out) throws IOException

Deprecated.

This method does not write the values contained by this PutField object in a proper format, and may result in corruption of the serialization stream. The correct way to write PutField data is by calling the ObjectOutputStream.writeFields() method.

Write the data and fields to the specified ObjectOutput stream, which must be the same stream that produced this PutField object.

Parameters:: out - the stream to write the data and fields to
Throws:: IOException - if I/O errors occur while writing to the underlying stream; IllegalArgumentException - if the specified stream is not the same stream that produced this PutField object

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Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/io/ObjectOutputStream.PutField.html