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Java™ Platform Standard Ed. 6 |
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java.lang.Objectjava.io.Reader
java.io.StringReader
public class StringReader
A character stream whose source is a string.
| Field Summary |
|---|
| Fields inherited from class java.io.Reader |
|---|
lock |
| Constructor Summary | |
|---|---|
StringReader(String s)
Creates a new string reader. |
|
| Method Summary | |
|---|---|
void |
close()
Closes the stream and releases any system resources associated with it. |
void |
mark(int readAheadLimit)
Marks the present position in the stream. |
boolean |
markSupported()
Tells whether this stream supports the mark() operation, which it does. |
int |
read()
Reads a single character. |
int |
read(char[] cbuf,
int off,
int len)
Reads characters into a portion of an array. |
boolean |
ready()
Tells whether this stream is ready to be read. |
void |
reset()
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 |
|---|
read, read |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public StringReader(String s)
s - String providing the character stream.| Method Detail |
|---|
public int read()
throws IOException
read in class ReaderIOException - If an I/O error occurs
public int read(char[] cbuf,
int off,
int len)
throws IOException
read in class Readercbuf - Destination bufferoff - Offset at which to start writing characterslen - Maximum number of characters to read
IOException - If an I/O error occurs
public long skip(long ns)
throws IOException
The ns parameter may be negative, even though the
skip method of the 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.
skip in class Readerns - The number of characters to skip
IOException - If an I/O error occurs
public boolean ready()
throws IOException
ready in class ReaderIOException - If the stream is closedpublic boolean markSupported()
markSupported in class Reader
public void mark(int readAheadLimit)
throws IOException
mark in class ReaderreadAheadLimit - 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.
IllegalArgumentException - If readAheadLimit is < 0
IOException - If an I/O error occurs
public void reset()
throws IOException
reset in class ReaderIOException - If an I/O error occurspublic void close()
close in interface Closeableclose in class Reader
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Java™ Platform Standard Ed. 6 |
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Copyright 2006 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.