ObjectStreamConstants

PROTOCOL_VERSION_1

int PROTOCOL_VERSION_1

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.

Constant Value: 1 (0x00000001)

PROTOCOL_VERSION_2

int PROTOCOL_VERSION_2

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.

Constant Value: 2 (0x00000002)

SC_BLOCK_DATA

byte SC_BLOCK_DATA

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

Constant Value: 8 (0x00000008)

SC_ENUM

byte SC_ENUM

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

Constant Value: 16 (0x00000010)

SC_EXTERNALIZABLE

byte SC_EXTERNALIZABLE

Bit mask for ObjectStreamClass flag. Indicates class is Externalizable.

Constant Value: 4 (0x00000004)

SC_SERIALIZABLE

byte SC_SERIALIZABLE

Bit mask for ObjectStreamClass flag. Indicates class is Serializable.

Constant Value: 2 (0x00000002)

SC_WRITE_METHOD

byte SC_WRITE_METHOD

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

Constant Value: 1 (0x00000001)

STREAM_MAGIC

short STREAM_MAGIC

Magic number that is written to the stream header.

Constant Value: -21267 (0xffffaced)

STREAM_VERSION

short STREAM_VERSION

Version number that is written to the stream header.

Constant Value: 5 (0x00000005)

TC_ARRAY

byte TC_ARRAY

new Array.

Constant Value: 117 (0x00000075)

TC_BASE

byte TC_BASE

First tag value.

Constant Value: 112 (0x00000070)

TC_BLOCKDATA

byte TC_BLOCKDATA

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

Constant Value: 119 (0x00000077)

TC_BLOCKDATALONG

byte TC_BLOCKDATALONG

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

Constant Value: 122 (0x0000007a)

TC_CLASS

byte TC_CLASS

Reference to Class.

Constant Value: 118 (0x00000076)

TC_CLASSDESC

byte TC_CLASSDESC

new Class Descriptor.

Constant Value: 114 (0x00000072)

TC_ENDBLOCKDATA

byte TC_ENDBLOCKDATA

End of optional block data blocks for an object.

Constant Value: 120 (0x00000078)

TC_ENUM

byte TC_ENUM

new Enum constant.

Constant Value: 126 (0x0000007e)

TC_EXCEPTION

byte TC_EXCEPTION

Exception during write.

Constant Value: 123 (0x0000007b)

TC_LONGSTRING

byte TC_LONGSTRING

Long string.

Constant Value: 124 (0x0000007c)

TC_MAX

byte TC_MAX

Last tag value.

Constant Value: 126 (0x0000007e)

TC_NULL

byte TC_NULL

Null object reference.

Constant Value: 112 (0x00000070)

TC_OBJECT

byte TC_OBJECT

new Object.

Constant Value: 115 (0x00000073)

TC_PROXYCLASSDESC

byte TC_PROXYCLASSDESC

new Proxy Class Descriptor.

Constant Value: 125 (0x0000007d)

TC_REFERENCE

byte TC_REFERENCE

Reference to an object already written into the stream.

Constant Value: 113 (0x00000071)

TC_RESET

byte TC_RESET

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

Constant Value: 121 (0x00000079)

TC_STRING

byte TC_STRING

new String.

Constant Value: 116 (0x00000074)

baseWireHandle

int baseWireHandle

First wire handle to be assigned.

Constant Value: 8257536 (0x007e0000)

SUBCLASS_IMPLEMENTATION_PERMISSION

SerializablePermission SUBCLASS_IMPLEMENTATION_PERMISSION

Enable overriding of readObject and writeObject.

SUBSTITUTION_PERMISSION

SerializablePermission SUBSTITUTION_PERMISSION

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