java.io.StringReader Maven / Gradle / Ivy
/*
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Neither this file nor any files generated from it describe a complete
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documentation, such as a unified set of documents of API signatures for
a platform that includes technologies expressed as Java APIs. The file
may also be used to produce "compilation stubs," which allow
applications to be compiled and validated for such platforms.
Any work generated from this file, such as unified javadocs or compiled
stub files, must be accompanied by this notice in its entirety.
This work corresponds to the API signatures of JSR 219: Foundation
Profile 1.1. In the event of a discrepency between this work and the
JSR 219 specification, which is available at
http://www.jcp.org/en/jsr/detail?id=219, the latter takes precedence.
*/
package java.io;
/**
* A character stream whose source is a string.
*
* @version 1.15, 00/02/02
* @author Mark Reinhold
* @since JDK1.1
*/
public class StringReader extends Reader
{
/**
* Create a new string reader.
*
* @param s String providing the character stream.
*/
public StringReader(String s) { }
/**
* Read a single character.
*
* @return The character read, or -1 if the end of the stream has been
* reached
*
* @exception IOException If an I/O error occurs
*/
public int read() throws IOException {
return 0;
}
/**
* Read characters into a portion of an array.
*
* @param cbuf Destination buffer
* @param off Offset at which to start writing characters
* @param len Maximum number of characters to read
*
* @return The number of characters read, or -1 if the end of the
* stream has been reached
*
* @exception IOException If an I/O error occurs
*/
public int read(char[] cbuf, int off, int len) throws IOException {
return 0;
}
/**
* Skip characters.
*
* @exception IOException If an I/O error occurs
*/
public long skip(long ns) throws IOException {
return -1;
}
/**
* Tell whether this stream is ready to be read.
*
* @return True if the next read() is guaranteed not to block for input
*
* @exception IOException If the stream is closed
*/
public boolean ready() throws IOException {
return false;
}
/**
* Tell whether this stream supports the mark() operation, which it does.
*/
public boolean markSupported() {
return false;
}
/**
* Mark the present position in the stream. Subsequent calls to reset()
* will reposition the stream to this point.
*
* @param 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.
*
* @exception IllegalArgumentException If readAheadLimit is < 0
* @exception IOException If an I/O error occurs
*/
public void mark(int readAheadLimit) throws IOException { }
/**
* Reset the stream to the most recent mark, or to the beginning of the
* string if it has never been marked.
*
* @exception IOException If an I/O error occurs
*/
public void reset() throws IOException { }
/**
* Close the stream.
*/
public void close() { }
}