- All Known Implementing Classes:
- BufferedReader,- CharArrayReader,- CharBuffer,- FileReader,- FilterReader,- InputStreamReader,- LineNumberReader,- PipedReader,- PushbackReader,- Reader,- StringReader
public interface Readable
A 
Readable is a source of characters. Characters from
 a Readable are made available to callers of the read
 method via a CharBuffer.- Since:
- 1.5
- 
Method SummaryModifier and TypeMethodDescriptionintread(CharBuffer cb) Attempts to read characters into the specified character buffer.
- 
Method Details- 
readAttempts to read characters into the specified character buffer. The buffer is used as a repository of characters as-is: the only changes made are the results of a put operation. No flipping or rewinding of the buffer is performed.- Parameters:
- cb- the buffer to read characters into
- Returns:
- The number of charvalues added to the buffer, or -1 if this source of characters is at its end
- Throws:
- IOException- if an I/O error occurs
- NullPointerException- if cb is null
- ReadOnlyBufferException- if cb is a read only buffer
 
 
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