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Java Source Code / Java Documentation » Apache Harmony Java SE » java package » java.io 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.io.ObjectInput

All known Subclasses:   java.io.ObjectInputStream,
ObjectInput
public interface ObjectInput extends DataInput(Code)
Streams to be used with serialization to read objects must implement this interface. ObjectInputStream is one example.
See Also:   ObjectInputStream
See Also:   ObjectOutput




Method Summary
public  intavailable()
     Answers a int representing then number of bytes of primitive data that are available.
public  voidclose()
     Close this ObjectInput.
public  intread()
     Reads a single byte from this ObjectInput and returns the result as an int.
public  intread(byte[] buffer)
     Reads bytes from the ObjectInput and stores them in byte array buffer.
public  intread(byte[] buffer, int offset, int count)
     Reads at most count bytes from the ObjectInput and stores them in byte array buffer starting at offset count.
public  ObjectreadObject()
     Reads the next object from this ObjectInput.
public  longskip(long toSkip)
     Skips toSkip number of bytes in this ObjectInput. Subsequent read()'s will not return these bytes.
Parameters:
  toSkip - the number of bytes to skip.



Method Detail
available
public int available() throws IOException(Code)
Answers a int representing then number of bytes of primitive data that are available. int the number of primitive bytes available.
throws:
  IOException - If an error occurs in this ObjectInput.



close
public void close() throws IOException(Code)
Close this ObjectInput. Concrete implementations of this class should free any resources during close.
throws:
  IOException - If an error occurs attempting to close this ObjectInput.



read
public int read() throws IOException(Code)
Reads a single byte from this ObjectInput and returns the result as an int. The low-order byte is returned or -1 of the end of stream was encountered. int The byte read or -1 if end of ObjectInput.
throws:
  IOException - If the ObjectInput is already closed or another IOExceptionoccurs.



read
public int read(byte[] buffer) throws IOException(Code)
Reads bytes from the ObjectInput and stores them in byte array buffer. Blocks while waiting for input.
Parameters:
  buffer - the array in which to store the read bytes. how many bytes were read or -1 if encountered endof ObjectInput.
throws:
  IOException - If the ObjectInput is already closed oranother IOException occurs.



read
public int read(byte[] buffer, int offset, int count) throws IOException(Code)
Reads at most count bytes from the ObjectInput and stores them in byte array buffer starting at offset count. Answer the number of bytes actually read or -1 if no bytes were read and end of ObjectInput was encountered.
Parameters:
  buffer - the byte array in which to store the read bytes.
Parameters:
  offset - the offset in buffer to store the read bytes.
Parameters:
  count - the maximum number of bytes to store in buffer. the number of bytes actually read or -1 if end of ObjectInput.
throws:
  IOException - If the ObjectInput is already closed or another IOExceptionoccurs.



readObject
public Object readObject() throws ClassNotFoundException, IOException(Code)
Reads the next object from this ObjectInput. the next object read from this ObjectInput
throws:
  IOException - If an error occurs attempting to read from this ObjectInput.
throws:
  ClassNotFoundException - If the object's class cannot be found



skip
public long skip(long toSkip) throws IOException(Code)
Skips toSkip number of bytes in this ObjectInput. Subsequent read()'s will not return these bytes.
Parameters:
  toSkip - the number of bytes to skip. the number of bytes actually skipped.
throws:
  IOException - If the ObjectInput is already closed or another IOExceptionoccurs.



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