Полезная информация

Java in a Nutshell

Previous Chapter 24
The java.io Package
Next
 

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


Previous Home Next
java.io.PrintWriter (JDK 1.1) Book Index java.io.PushbackReader (JDK 1.1)

Java in a Nutshell Java Language Reference Java AWT Java Fundamental Classes Exploring Java