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Chapter 24 The java.io Package |
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24.54 java.io.PushbackInputStream (JDK 1.0)
This class is a FilterInputStream that implements a one-byte pushback buffer or, in Java 1.1, a pushback buffer of a specified length. The unread() methods "push" bytes back into the stream--these bytes are the first ones read by the next call to a read() method. This class is sometimes useful when writing parsers.
See also PushbackReader.
public class PushbackInputStream extends FilterInputStream {
// Public Constructors
1.1 public PushbackInputStream(InputStream in, int size);
public PushbackInputStream(InputStream in);
// Protected Instance Variables
1.1 protected byte[] buf;
1.1 protected int pos;
// Public Instance Methods
public int available() throws IOException; // Overrides FilterInputStream
public boolean markSupported(); // Overrides FilterInputStream
public int read() throws IOException; // Overrides FilterInputStream
public int read(byte[] b, int off, int len) throws IOException; // Overrides FilterInputStream
public void unread(int b) throws IOException;
1.1 public void unread(byte[] b, int off, int len) throws IOException;
1.1 public void unread(byte[] b) throws IOException;
}
Hierarchy:
Object->InputStream->FilterInputStream->PushbackInputStream
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| java.io.PrintWriter (JDK 1.1) |  |
java.io.PushbackReader (JDK 1.1) |
