java.io
Interface ObjectStreamConstants

All Known Implementing Classes:

ObjectInputStream, ObjectOutputStream

public interface ObjectStreamConstants

Constants written into the Object Serialization Stream.

Since:

JDK 1.1

Field Summary

static int	baseWireHandle Suppressed. First wire handle to be assigned.
static int	PROTOCOL_VERSION_1 Suppressed. A Stream Protocol Version.
static int	PROTOCOL_VERSION_2 Suppressed. A Stream Protocol Version.
static byte	SC_BLOCK_DATA Suppressed. Bit mask for ObjectStreamClass flag.
static byte	SC_ENUM Suppressed. Bit mask for ObjectStreamClass flag.
static byte	SC_EXTERNALIZABLE Suppressed. Bit mask for ObjectStreamClass flag.
static byte	SC_SERIALIZABLE Suppressed. Bit mask for ObjectStreamClass flag.
static byte	SC_WRITE_METHOD Suppressed. Bit mask for ObjectStreamClass flag.
static short	STREAM_MAGIC Suppressed. Magic number that is written to the stream header.
static short	STREAM_VERSION Suppressed. Version number that is written to the stream header.
static SerializablePermission	SUBCLASS_IMPLEMENTATION_PERMISSION Suppressed. Enable overriding of readObject and writeObject.
static SerializablePermission	SUBSTITUTION_PERMISSION Suppressed. Enable substitution of one object for another during serialization/deserialization.
static byte	TC_ARRAY Suppressed. new Array.
static byte	TC_BASE Suppressed. First tag value.
static byte	TC_BLOCKDATA Suppressed. Block of optional data.
static byte	TC_BLOCKDATALONG Suppressed. long Block data.
static byte	TC_CLASS Suppressed. Reference to Class.
static byte	TC_CLASSDESC Suppressed. new Class Descriptor.
static byte	TC_ENDBLOCKDATA Suppressed. End of optional block data blocks for an object.
static byte	TC_ENUM Suppressed. new Enum constant.
static byte	TC_EXCEPTION Suppressed. Exception during write.
static byte	TC_LONGSTRING Suppressed. Long string.
static byte	TC_MAX Suppressed. Last tag value.
static byte	TC_NULL Suppressed. Null object reference.
static byte	TC_OBJECT Suppressed. new Object.
static byte	TC_PROXYCLASSDESC Suppressed. new Proxy Class Descriptor.
static byte	TC_REFERENCE Suppressed. Reference to an object already written into the stream.
static byte	TC_RESET Suppressed. Reset stream context.
static byte	TC_STRING Suppressed. new String.

Field Detail

STREAM_MAGIC

static final short STREAM_MAGIC

Suppressed. default deny

Magic number that is written to the stream header.

See Also:

Constant Field Values

STREAM_VERSION

static final short STREAM_VERSION

Suppressed. default deny

Version number that is written to the stream header.

See Also:

Constant Field Values

TC_BASE

static final byte TC_BASE

Suppressed. default deny

First tag value.

See Also:

Constant Field Values

TC_NULL

static final byte TC_NULL

Suppressed. default deny

Null object reference.

See Also:

Constant Field Values

TC_REFERENCE

static final byte TC_REFERENCE

Suppressed. default deny

Reference to an object already written into the stream.

See Also:

Constant Field Values

TC_CLASSDESC

static final byte TC_CLASSDESC

Suppressed. default deny

new Class Descriptor.

See Also:

Constant Field Values

TC_OBJECT

static final byte TC_OBJECT

Suppressed. default deny

new Object.

See Also:

Constant Field Values

TC_STRING

static final byte TC_STRING

Suppressed. default deny

new String.

See Also:

Constant Field Values

TC_ARRAY

static final byte TC_ARRAY

Suppressed. default deny

new Array.

See Also:

Constant Field Values

TC_CLASS

static final byte TC_CLASS

Suppressed. default deny

Reference to Class.

See Also:

Constant Field Values

TC_BLOCKDATA

static final byte TC_BLOCKDATA

Suppressed. default deny

Block of optional data. Byte following tag indicates number of bytes in this block data.

See Also:

Constant Field Values

TC_ENDBLOCKDATA

static final byte TC_ENDBLOCKDATA

Suppressed. default deny

End of optional block data blocks for an object.

See Also:

Constant Field Values

TC_RESET

static final byte TC_RESET

Suppressed. default deny

Reset stream context. All handles written into stream are reset.

See Also:

Constant Field Values

TC_BLOCKDATALONG

static final byte TC_BLOCKDATALONG

Suppressed. default deny

long Block data. The long following the tag indicates the number of bytes in this block data.

See Also:

Constant Field Values

TC_EXCEPTION

static final byte TC_EXCEPTION

Suppressed. default deny

Exception during write.

See Also:

Constant Field Values

TC_LONGSTRING

static final byte TC_LONGSTRING

Suppressed. default deny

Long string.

See Also:

Constant Field Values

TC_PROXYCLASSDESC

static final byte TC_PROXYCLASSDESC

Suppressed. default deny

new Proxy Class Descriptor.

See Also:

Constant Field Values

TC_ENUM

static final byte TC_ENUM

Suppressed. default deny

new Enum constant.

Since:

1.5

See Also:

Constant Field Values

TC_MAX

static final byte TC_MAX

Suppressed. default deny

Last tag value.

See Also:

Constant Field Values

baseWireHandle

static final int baseWireHandle

Suppressed. default deny

First wire handle to be assigned.

See Also:

Constant Field Values

SC_WRITE_METHOD

static final byte SC_WRITE_METHOD

Suppressed. default deny

Bit mask for ObjectStreamClass flag. Indicates a Serializable class defines its own writeObject method.

See Also:

Constant Field Values

SC_BLOCK_DATA

static final byte SC_BLOCK_DATA

Suppressed. default deny

Bit mask for ObjectStreamClass flag. Indicates Externalizable data written in Block Data mode. Added for PROTOCOL_VERSION_2.

Since:

1.2

See Also:

PROTOCOL_VERSION_2, Constant Field Values

SC_SERIALIZABLE

static final byte SC_SERIALIZABLE

Suppressed. default deny

Bit mask for ObjectStreamClass flag. Indicates class is Serializable.

See Also:

Constant Field Values

SC_EXTERNALIZABLE

static final byte SC_EXTERNALIZABLE

Suppressed. default deny

Bit mask for ObjectStreamClass flag. Indicates class is Externalizable.

See Also:

Constant Field Values

SC_ENUM

static final byte SC_ENUM

Suppressed. default deny

Bit mask for ObjectStreamClass flag. Indicates class is an enum type.

Since:

1.5

See Also:

Constant Field Values

SUBSTITUTION_PERMISSION

static final SerializablePermission SUBSTITUTION_PERMISSION

Suppressed. default deny

Enable substitution of one object for another during serialization/deserialization.

Since:

1.2

See Also:

ObjectOutputStream.enableReplaceObject(boolean), ObjectInputStream.enableResolveObject(boolean)

SUBCLASS_IMPLEMENTATION_PERMISSION

static final SerializablePermission SUBCLASS_IMPLEMENTATION_PERMISSION

Suppressed. default deny

Enable overriding of readObject and writeObject.

Since:

1.2

See Also:

ObjectOutputStream.writeObjectOverride(Object), ObjectInputStream.readObjectOverride()

PROTOCOL_VERSION_1

static final int PROTOCOL_VERSION_1

Suppressed. default deny

A Stream Protocol Version.

All externalizable data is written in JDK 1.1 external data format after calling this method. This version is needed to write streams containing Externalizable data that can be read by pre-JDK 1.1.6 JVMs.

Since:

1.2

See Also:

ObjectOutputStream.useProtocolVersion(int), Constant Field Values

PROTOCOL_VERSION_2

static final int PROTOCOL_VERSION_2

Suppressed. default deny

A Stream Protocol Version.

This protocol is written by JVM 1.2. Externalizable data is written in block data mode and is terminated with TC_ENDBLOCKDATA. Externalizable classdescriptor flags has SC_BLOCK_DATA enabled. JVM 1.1.6 and greater can read this format change. Enables writing a nonSerializable class descriptor into the stream. The serialVersionUID of a nonSerializable class is set to 0L.

Since:

1.2

See Also:

ObjectOutputStream.useProtocolVersion(int), SC_BLOCK_DATA, Constant Field Values