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Java Standard Edition (SE)

ObjectInput


compact1, compact2, compact3
java.io

Interface ObjectInput

    • Method Detail

      • readObject

        Object readObject()
                   throws ClassNotFoundException,
                          IOException
        Read and return an object. The class that implements this interface defines where the object is "read" from.
        Returns:
        the object read from the stream
        Throws:
        ClassNotFoundException - If the class of a serialized object cannot be found.
        IOException - If any of the usual Input/Output related exceptions occur.
      • read

        int read()
          throws IOException
        Reads a byte of data. This method will block if no input is available.
        Returns:
        the byte read, or -1 if the end of the stream is reached.
        Throws:
        IOException - If an I/O error has occurred.
      • read

        int read(byte[] b)
          throws IOException
        Reads into an array of bytes. This method will block until some input is available.
        Parameters:
        b - the buffer into which the data is read
        Returns:
        the actual number of bytes read, -1 is returned when the end of the stream is reached.
        Throws:
        IOException - If an I/O error has occurred.
      • read

        int read(byte[] b,
                 int off,
                 int len)
          throws IOException
        Reads into an array of bytes. This method will block until some input is available.
        Parameters:
        b - the buffer into which the data is read
        off - the start offset of the data
        len - the maximum number of bytes read
        Returns:
        the actual number of bytes read, -1 is returned when the end of the stream is reached.
        Throws:
        IOException - If an I/O error has occurred.
      • skip

        long skip(long n)
           throws IOException
        Skips n bytes of input.
        Parameters:
        n - the number of bytes to be skipped
        Returns:
        the actual number of bytes skipped.
        Throws:
        IOException - If an I/O error has occurred.
      • available

        int available()
               throws IOException
        Returns the number of bytes that can be read without blocking.
        Returns:
        the number of available bytes.
        Throws:
        IOException - If an I/O error has occurred.
      • close

        void close()
            throws IOException
        Closes the input stream. Must be called to release any resources associated with the stream.
        Specified by:
        close in interface AutoCloseable
        Throws:
        IOException - If an I/O error has occurred.


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