The Java.io.PushbackInputStream class adds functionality to another input stream, namely the ability to "push back" or "unread" one byte.
Following is the declaration for Java.io.PushbackInputStream class:
public class PushbackInputStream extends FilterInputStream
Following are the fields for Java.io.PushbackInputStream class:
protected byte buf -- This is the pushback buffer.
protected int pos -- This is the position within the pushback buffer from which the next byte will be read.
protected InputStream in -- This is the input stream to be filtered.
|S.N.||Constructor & Description|
|1||PushbackInputStream(InputStream in) |
This creates a PushbackInputStream and saves its argument, the input stream in, for later use.
|2||PushbackInputStream(InputStream in, int size) |
This creates a PushbackInputStream with a pushback buffer of the specified size, and saves its argument, the input stream in, for later use.
|S.N.||Method & Description|
|1|| int available() |
This method returns an estimate of the number of bytes that can be read (or skipped over) from this input stream without blocking by the next invocation of a method for this input stream.
|2|| void close() |
This method closes this input stream and releases any system resources associated with the stream.
|3|| void mark(int readlimit) |
This method marks the current position in this input stream.
|4|| boolean markSupported() |
This method tests if this input stream supports the mark and reset methods, which it does not.
|5|| int read() |
This method reads the next byte of data from this input stream.
|6|| int read(byte b, int off, int len) |
This method reads up to len bytes of data from this input stream into an array of bytes.
|7|| void reset() |
This method repositions this stream to the position at the time the mark method was last called on this input stream.
|8|| long skip(long n) |
This method skips over and discards n bytes of data from this input stream.
|9|| void unread(byte b) |
This method pushes back an array of bytes by copying it to the front of the pushback buffer.
|10|| void unread(byte b, int off, int len) |
This method pushes back a portion of an array of bytes by copying it to the front of the pushback buffer.
|11|| void unread(int b) |
This method pushes back a byte by copying it to the front of the pushback buffer.
This class inherits methods from the following classes: