public abstract interface ObjectInput extends DataInput {
    // Public Instance Methods
            public abstract int available() throws IOException;
            public abstract void close() throws IOException;
            public abstract int read() throws IOException;
            public abstract int read(byte[] b) throws IOException;
            public abstract int read(byte[] b, int off, int len) throws IOException;
            public abstract Object readObject() throws ClassNotFoundException, IOException;
            public abstract long skip(long n) throws IOException;
}