ObjectStreamConstants

ObjectStreamConstants

java.io

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Java 1.2

This interface defines various constants used by the Java object-serialization mechanism. Two important constants are PROTOCOL_VERSION_1 and PROTOCOL_VERSION_2 , which specify the version of the serialization protocol to use. In Java 1.2, you can pass either of these values to the useProtocolVersion( ) method of an ObjectOutputStream . By default, Java 1.2 uses Version 2 of the protocol, and Java 1.1 uses Version 1 when serializing objects. Java 1.2 can deserialize objects written using either version of the protocol, as can Java 1.1.7 and later. If you want to serialize an object so that it can be read by versions of Java prior to Java 1.1.7, use PROTOCOL_VERSION_1 .

The other constants defined by this interface are low-level values used by the serialization protocol. You do not need to use them unless you are reimplementing the serialization mechanism yourself.

 public interface  ObjectStreamConstants  {  // Public Constants  public static final int  baseWireHandle  ;  =8257536  public static final int  PROTOCOL_VERSION_1  ;  =1  public static final int  PROTOCOL_VERSION_2  ;  =2  public static final byte  SC_BLOCK_DATA  ;  =8   5.0  public static final byte  SC_ENUM  ;  =16  public static final byte  SC_EXTERNALIZABLE  ;  =4  public static final byte  SC_SERIALIZABLE  ;  =2  public static final byte  SC_WRITE_METHOD  ;  =1  public static final short  STREAM_MAGIC  ;  =-21267  public static final short  STREAM_VERSION  ;  =5  public static final SerializablePermission  SUBCLASS_IMPLEMENTATION_PERMISSION  ;        public static final SerializablePermission  SUBSTITUTION_PERMISSION  ;        public static final byte  TC_ARRAY  ;  =117  public static final byte  TC_BASE  ;  =112  public static final byte  TC_BLOCKDATA  ;  =119  public static final byte  TC_BLOCKDATALONG  ;  =122  public static final byte  TC_CLASS  ;  =118  public static final byte  TC_CLASSDESC  ;  =114  public static final byte  TC_ENDBLOCKDATA  ;  =120   5.0  public static final byte  TC_ENUM  ;  =126  public static final byte  TC_EXCEPTION  ;  =123   1.3  public static final byte  TC_LONGSTRING  ;  =124  public static final byte  TC_MAX  ;  =126  public static final byte  TC_NULL  ;  =112  public static final byte  TC_OBJECT  ;  =115   1.3  public static final byte  TC_PROXYCLASSDESC  ;  =125  public static final byte  TC_REFERENCE  ;  =113  public static final byte  TC_RESET  ;  =121  public static final byte  TC_STRING  ;  =116  } 

Implementations

ObjectInputStream , ObjectOutputStream