java.lang.Object | +--java.io.Reader | +--java.io.InputStreamReader
An InputStreamReader is a bridge from byte streams to character streams: It reads bytes and translates them into characters according to a specified character encoding. The encoding that it uses may be specified by name, or the platform's default encoding may be accepted.
Each invocation of one of an InputStreamReader's read() methods may cause one or more bytes to be read from the underlying byte-input stream. To enable the efficient conversion of bytes to characters, more bytes may be read ahead from the underlying stream than are necessary to satisfy the current read operation.
Fields inherited from class java.io.Reader |
lock |
Constructor Summary | |
InputStreamReader(InputStream is)
Create an InputStreamReader that uses the default character encoding. |
|
InputStreamReader(InputStream is,
String enc)
Create an InputStreamReader that uses the named character encoding. |
Method Summary | |
void |
close()
Close the stream. |
void |
mark(int readAheadLimit)
Mark the present position in the stream. |
boolean |
markSupported()
Tell whether this stream supports the mark() operation. |
int |
read()
Read a single character. |
int |
read(char[] cbuf,
int off,
int len)
Read characters into a portion of an array. |
boolean |
ready()
Tell whether this stream is ready to be read. |
void |
reset()
Reset the stream. |
long |
skip(long n)
Skip characters. |
Methods inherited from class java.io.Reader |
read |
Methods inherited from class java.lang.Object |
equals,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
Constructor Detail |
public InputStreamReader(InputStream is)
in
- An InputStreampublic InputStreamReader(InputStream is, String enc) throws UnsupportedEncodingException
in
- An InputStreamenc
- The name of a supportedMethod Detail |
public int read() throws IOException
public int read(char[] cbuf, int off, int len) throws IOException
public long skip(long n) throws IOException
public boolean ready() throws IOException
public boolean markSupported()
public void mark(int readAheadLimit) throws IOException
public void reset() throws IOException
public void close() throws IOException