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JavaTM 2 Platform Std. Ed. v1.3 |
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java.lang.Object
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+--java.io.Reader
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+--java.io.BufferedReader
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+--java.io.LineNumberReader
A buffered character-input stream that keeps track of line numbers. A line is considered to be terminated by any one of a line feed ('\n'), a carriage return ('\r'), or a carriage return followed immediately by a linefeed.
| Fields inherited from class java.io.Reader |
lock |
| Constructor Summary | |
LineNumberReader(Reader in)
Create a new line-numbering reader, using the default input-buffer size. |
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LineNumberReader(Reader in,
int sz)
Create a new line-numbering reader, reading characters into a buffer of the given size. |
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| Method Summary | |
int |
getLineNumber()
Get the current line number. |
void |
mark(int readAheadLimit)
Mark the present position in the stream. |
int |
read()
Read a single character. |
int |
read(char[] cbuf,
int off,
int len)
Read characters into a portion of an array. |
String |
readLine()
Read a line of text. |
void |
reset()
Reset the stream to the most recent mark. |
void |
setLineNumber(int lineNumber)
Set the current line number. |
long |
skip(long n)
Skip characters. |
| Methods inherited from class java.io.BufferedReader |
close, markSupported, ready |
| Methods inherited from class java.io.Reader |
read |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
public LineNumberReader(Reader in)
in - a Reader object to provide the underlying stream.
public LineNumberReader(Reader in,
int sz)
in - a Reader object to provide the underlying stream.sz - an int specifying the size of the buffer.| Method Detail |
public void setLineNumber(int lineNumber)
lineNumber - an int specifying the line number.getLineNumber()public int getLineNumber()
setLineNumber(int)
public int read()
throws IOException
read in class BufferedReaderIOException - If an I/O error occurs
public int read(char[] cbuf,
int off,
int len)
throws IOException
read in class BufferedReadercbuf - Destination bufferoff - Offset at which to start storing characterslen - Maximum number of characters to readIOException - If an I/O error occurs
public String readLine()
throws IOException
readLine in class BufferedReaderIOException - If an I/O error occurs
public long skip(long n)
throws IOException
skip in class BufferedReadern - The number of characters to skipIOException - If an I/O error occurs
public void mark(int readAheadLimit)
throws IOException
mark in class BufferedReaderreadAheadLimit - Limit on the number of characters that may be
read while still preserving the mark. After
reading this many characters, attempting to
reset the stream may fail.IOException - If an I/O error occurs
public void reset()
throws IOException
reset in class BufferedReaderIOException - If the stream has not been marked,
or if the mark has been invalidated
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JavaTM 2 Platform Std. Ed. v1.3 |
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