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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 Summary
All 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
read
int 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:
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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 occursNullPointerException- if cb is nullReadOnlyBufferException- if cb is a read only buffer
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