This documentation differs from the official API. Jadeite adds extra features to the API including: variable font sizes, constructions examples, placeholders for classes and methods, and auto-generated “See Also” links. Additionally it is missing some items found in standard Javadoc documentation, including: generics type information, “Deprecated” tags and comments, “See Also” links, along with other minor differences. Please send any questions or feedback to bam@cs.cmu.edu.


java.io
class StringReader

java.lang.Object extended by java.io.Reader extended by java.io.StringReader
All Implemented Interfaces:
Closeable, Readable

Most common way to construct:

String s = …;

StringReader reader = new StringReader(s);

Based on 77 examples


public class StringReader
extends Reader

A character stream whose source is a string.

See Also (auto-generated):

StringBuffer

Document

BufferedReader


Field Summary
 
Fields inherited from class java.io.Reader
lock
 
Constructor Summary

          Creates a new string reader.
 
Method Summary
 void

          Closes the stream and releases any system resources associated with it.
 void
mark(int readAheadLimit)

          Marks the present position in the stream.
 boolean

          Tells whether this stream supports the mark() operation, which it does.
 int

          Reads a single character.
 int
read(char[] cbuf, int off, int len)

          Reads characters into a portion of an array.
 boolean

          Tells whether this stream is ready to be read.
 void

          Resets the stream to the most recent mark, or to the beginning of the string if it has never been marked.
 long
skip(long ns)

          Skips the specified number of characters in the stream.
 
Methods inherited from class java.io.Reader
close, mark, markSupported, read, read, read, read, ready, reset, skip
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

StringReader

public StringReader(String s)
Creates a new string reader.

Parameters:
s - String providing the character stream.
Method Detail

close

public void close()
Closes the stream and releases any system resources associated with it. Once the stream has been closed, further read(), ready(), mark(), or reset() invocations will throw an IOException. Closing a previously closed stream has no effect.

Overrides:
close in class Reader

mark

public void mark(int readAheadLimit)
          throws IOException
Marks the present position in the stream. Subsequent calls to reset() will reposition the stream to this point.

Overrides:
mark in class Reader
Parameters:
readAheadLimit - Limit on the number of characters that may be read while still preserving the mark. Because the stream's input comes from a string, there is no actual limit, so this argument must not be negative, but is otherwise ignored.
Throws:
IOException - If an I/O error occurs

markSupported

public boolean markSupported()
Tells whether this stream supports the mark() operation, which it does.

Overrides:
markSupported in class Reader

read

public int read()
         throws IOException
Reads a single character.

Overrides:
read in class Reader
Returns:
The character read, or -1 if the end of the stream has been reached
Throws:
IOException - If an I/O error occurs

read

public int read(char[] cbuf,
                int off,
                int len)
         throws IOException
Reads characters into a portion of an array.

Overrides:
read in class Reader
Parameters:
cbuf - Destination buffer
off - Offset at which to start writing characters
len - Maximum number of characters to read
Returns:
The number of characters read, or -1 if the end of the stream has been reached
Throws:
IOException - If an I/O error occurs

ready

public boolean ready()
              throws IOException
Tells whether this stream is ready to be read.

Overrides:
ready in class Reader
Returns:
True if the next read() is guaranteed not to block for input
Throws:
IOException - If the stream is closed

reset

public void reset()
           throws IOException
Resets the stream to the most recent mark, or to the beginning of the string if it has never been marked.

Overrides:
reset in class Reader
Throws:
IOException - If an I/O error occurs

skip

public long skip(long ns)
          throws IOException
Skips the specified number of characters in the stream. Returns the number of characters that were skipped.

The ns parameter may be negative, even though the skip method of the {@link Reader} superclass throws an exception in this case. Negative values of ns cause the stream to skip backwards. Negative return values indicate a skip backwards. It is not possible to skip backwards past the beginning of the string.

If the entire string has been read or skipped, then this method has no effect and always returns 0.

Overrides:
skip in class Reader
Parameters:
ns
Throws:
IOException - If an I/O error occurs


This documentation differs from the official API. Jadeite adds extra features to the API including: variable font sizes, constructions examples, placeholders for classes and methods, and auto-generated “See Also” links. Additionally it is missing some items found in standard Javadoc documentation, including: generics type information, “Deprecated” tags and comments, “See Also” links, along with other minor differences. Please send any questions or feedback to bam@cs.cmu.edu.
This page displays the Jadeite version of the documention, which is derived from the offical documentation that contains this copyright notice:
Copyright 2008 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.
The official Sun™ documentation can be found here at http://java.sun.com/javase/6/docs/api/.