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JavaTM 2 Platform Std. Ed. v1.3 |
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java.lang.Object | +--java.io.Writer
Abstract class for writing to character streams. The only methods that a subclass must implement are write(char[], int, int), flush(), and close(). Most subclasses, however, will override some of the methods defined here in order to provide higher efficiency, additional functionality, or both.
Writer,
BufferedWriter,
CharArrayWriter,
FilterWriter,
OutputStreamWriter,
FileWriter,
PipedWriter,
PrintWriter,
StringWriter,
Reader| Field Summary | |
protected Object |
lock
The object used to synchronize operations on this stream. |
| Constructor Summary | |
protected |
Writer()
Create a new character-stream writer whose critical sections will synchronize on the writer itself. |
protected |
Writer(Object lock)
Create a new character-stream writer whose critical sections will synchronize on the given object. |
| Method Summary | |
abstract void |
close()
Close the stream, flushing it first. |
abstract void |
flush()
Flush the stream. |
void |
write(char[] cbuf)
Write an array of characters. |
abstract void |
write(char[] cbuf,
int off,
int len)
Write a portion of an array of characters. |
void |
write(int c)
Write a single character. |
void |
write(String str)
Write a string. |
void |
write(String str,
int off,
int len)
Write a portion of a string. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
protected Object lock
| Constructor Detail |
protected Writer()
protected Writer(Object lock)
lock - Object to synchronize on.| Method Detail |
public void write(int c)
throws IOException
Subclasses that intend to support efficient single-character output should override this method.
c - int specifying a character to be written.IOException - If an I/O error occurs
public void write(char[] cbuf)
throws IOException
cbuf - Array of characters to be writtenIOException - If an I/O error occurs
public abstract void write(char[] cbuf,
int off,
int len)
throws IOException
cbuf - Array of charactersoff - Offset from which to start writing characterslen - Number of characters to writeIOException - If an I/O error occurs
public void write(String str)
throws IOException
str - String to be writtenIOException - If an I/O error occurs
public void write(String str,
int off,
int len)
throws IOException
str - A Stringoff - Offset from which to start writing characterslen - Number of characters to writeIOException - If an I/O error occurs
public abstract void flush()
throws IOException
IOException - If an I/O error occurs
public abstract void close()
throws IOException
IOException - If an I/O error occurs
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JavaTM 2 Platform Std. Ed. v1.3 |
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