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- All Known Implementing Classes:
- BufferedReader,- CharArrayReader,- CharBuffer,- FileReader,- FilterReader,- InputStreamReader,- LineNumberReader,- PipedReader,- PushbackReader,- Reader,- StringReader,- URLReader
 
 public interface ReadableAReadableis a source of characters. Characters from aReadableare made available to callers of the read method via aCharBuffer.- Since:
- 1.5
 
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Method SummaryAll Methods Instance Methods Abstract Methods Modifier and Type Method Description intread(CharBuffer cb)Attempts to read characters into the specified character buffer.
 
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Method Detail- 
readint read(CharBuffer cb) throws IOException Attempts 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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