Interface ObjectStreamConstants

All Known Implementing Classes:

ObjectInputStream, ObjectOutputStream

public interface ObjectStreamConstants

Constants written into the Object Serialization Stream.

Since:

JDK 1.1

Fields

STREAM_MAGIC

static final short STREAM_MAGIC

Magic number that is written to the stream header.

STREAM_VERSION

static final short STREAM_VERSION

Version number that is written to the stream header.

TC_BASE

static final byte TC_BASE

First tag value.

TC_NULL

static final byte TC_NULL

Null object reference.

TC_REFERENCE

static final byte TC_REFERENCE

Reference to an object already written into the stream.

TC_CLASSDESC

static final byte TC_CLASSDESC

new Class Descriptor.

TC_OBJECT

static final byte TC_OBJECT

new Object.

TC_STRING

static final byte TC_STRING

new String.

TC_ARRAY

static final byte TC_ARRAY

new Array.

TC_CLASS

static final byte TC_CLASS

Reference to Class.

TC_BLOCKDATA

static final byte TC_BLOCKDATA

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

TC_ENDBLOCKDATA

static final byte TC_ENDBLOCKDATA

End of optional block data blocks for an object.

TC_RESET

static final byte TC_RESET

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

TC_BLOCKDATALONG

static final byte TC_BLOCKDATALONG

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

TC_EXCEPTION

static final byte TC_EXCEPTION

Exception during write.

TC_LONGSTRING

static final byte TC_LONGSTRING

Long string.

TC_PROXYCLASSDESC

static final byte TC_PROXYCLASSDESC

new Proxy Class Descriptor.

TC_ENUM

static final byte TC_ENUM

new Enum constant.

Since:

1.5

TC_MAX

static final byte TC_MAX

Last tag value.

baseWireHandle

static final int baseWireHandle

First wire handle to be assigned.

SC_WRITE_METHOD

static final byte SC_WRITE_METHOD

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

SC_BLOCK_DATA

static final byte SC_BLOCK_DATA

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

Bit mask for ObjectStreamClass flag. Indicates class is Serializable.

SC_EXTERNALIZABLE

static final byte SC_EXTERNALIZABLE

Bit mask for ObjectStreamClass flag. Indicates class is Externalizable.

SC_ENUM

static final byte SC_ENUM

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

Since:

1.5

SUBSTITUTION_PERMISSION

static final SerializablePermission SUBSTITUTION_PERMISSION

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

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

Since:

1.2

See Also:

ObjectOutputStream.useProtocolVersion(int), Constant Field Values

PROTOCOL_VERSION_2

static final int PROTOCOL_VERSION_2

Since:

1.2

See Also:

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