Interface ObjectStreamConstants
- All Known Implementing Classes:
-
ObjectInputStream,ObjectOutputStream
public interface ObjectStreamConstants
Constants written into the Object Serialization Stream.
- Since:
- 1.1
Field Summary
| Modifier and Type | Field | Description |
|---|---|---|
static int | baseWireHandle | First wire handle to be assigned. |
static int | PROTOCOL_VERSION_1 | A Stream Protocol Version. |
static int | PROTOCOL_VERSION_2 | A Stream Protocol Version. |
static byte | SC_BLOCK_DATA | Bit mask for ObjectStreamClass flag. |
static byte | SC_ENUM | Bit mask for ObjectStreamClass flag. |
static byte | SC_EXTERNALIZABLE | Bit mask for ObjectStreamClass flag. |
static byte | SC_SERIALIZABLE | Bit mask for ObjectStreamClass flag. |
static byte | SC_WRITE_METHOD | Bit mask for ObjectStreamClass flag. |
static SerializablePermission | SERIAL_FILTER_PERMISSION | Enable setting the process-wide serial filter. |
static short | STREAM_MAGIC | Magic number that is written to the stream header. |
static short | STREAM_VERSION | Version number that is written to the stream header. |
static SerializablePermission | SUBCLASS_IMPLEMENTATION_PERMISSION | Enable overriding of readObject and writeObject. |
static SerializablePermission | SUBSTITUTION_PERMISSION | Enable substitution of one object for another during serialization/deserialization. |
static byte | TC_ARRAY | new Array. |
static byte | TC_BASE | First tag value. |
static byte | TC_BLOCKDATA | Block of optional data. |
static byte | TC_BLOCKDATALONG | long Block data. |
static byte | TC_CLASS | Reference to Class. |
static byte | TC_CLASSDESC | new Class Descriptor. |
static byte | TC_ENDBLOCKDATA | End of optional block data blocks for an object. |
static byte | TC_ENUM | new Enum constant. |
static byte | TC_EXCEPTION | Exception during write. |
static byte | TC_LONGSTRING | Long string. |
static byte | TC_MAX | Last tag value. |
static byte | TC_NULL | Null object reference. |
static byte | TC_OBJECT | new Object. |
static byte | TC_PROXYCLASSDESC | new Proxy Class Descriptor. |
static byte | TC_REFERENCE | Reference to an object already written into the stream. |
static byte | TC_RESET | Reset stream context. |
static byte | TC_STRING | new String. |
Field Detail
STREAM_MAGIC
static final short STREAM_MAGIC
Magic number that is written to the stream header.
- See Also:
- Constant Field Values
STREAM_VERSION
static final short STREAM_VERSION
Version number that is written to the stream header.
- See Also:
- Constant Field Values
TC_BASE
static final byte TC_BASE
First tag value.
- See Also:
- Constant Field Values
TC_NULL
static final byte TC_NULL
Null object reference.
- See Also:
- Constant Field Values
TC_REFERENCE
static final byte TC_REFERENCE
Reference to an object already written into the stream.
- See Also:
- Constant Field Values
TC_CLASSDESC
static final byte TC_CLASSDESC
new Class Descriptor.
- See Also:
- Constant Field Values
TC_OBJECT
static final byte TC_OBJECT
new Object.
- See Also:
- Constant Field Values
TC_STRING
static final byte TC_STRING
new String.
- See Also:
- Constant Field Values
TC_ARRAY
static final byte TC_ARRAY
new Array.
- See Also:
- Constant Field Values
TC_CLASS
static final byte TC_CLASS
Reference to Class.
- See Also:
- Constant Field Values
TC_BLOCKDATA
static final byte TC_BLOCKDATA
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
End of optional block data blocks for an object.
- See Also:
- Constant Field Values
TC_RESET
static final byte TC_RESET
Reset stream context. All handles written into stream are reset.
- See Also:
- Constant Field Values
TC_BLOCKDATALONG
static final byte TC_BLOCKDATALONG
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
Exception during write.
- See Also:
- Constant Field Values
TC_LONGSTRING
static final byte TC_LONGSTRING
Long string.
- See Also:
- Constant Field Values
TC_PROXYCLASSDESC
static final byte TC_PROXYCLASSDESC
new Proxy Class Descriptor.
- See Also:
- Constant Field Values
TC_ENUM
static final byte TC_ENUM
new Enum constant.
- Since:
- 1.5
- See Also:
- Constant Field Values
TC_MAX
static final byte TC_MAX
Last tag value.
- See Also:
- Constant Field Values
baseWireHandle
static final int baseWireHandle
First wire handle to be assigned.
- See Also:
- Constant Field Values
SC_WRITE_METHOD
static final byte SC_WRITE_METHOD
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
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.
- See Also:
- Constant Field Values
SC_EXTERNALIZABLE
static final byte SC_EXTERNALIZABLE
Bit mask for ObjectStreamClass flag. Indicates class is Externalizable.
- See Also:
- Constant Field Values
SC_ENUM
static final byte SC_ENUM
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
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()
SERIAL_FILTER_PERMISSION
static final SerializablePermission SERIAL_FILTER_PERMISSION
Enable setting the process-wide serial filter.
- Since:
- 9
- See Also:
ObjectInputFilter.Config.setSerialFilter(ObjectInputFilter)
PROTOCOL_VERSION_1
static final 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.
- Since:
- 1.2
- See Also:
-
ObjectOutputStream.useProtocolVersion(int), Constant Field Values
PROTOCOL_VERSION_2
static final 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 class descriptor 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