Interface Readable

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 Summary

    Modifier and Type
    Method
    Description
    int
    read(CharBuffer cb)
    Attempts to read characters into the specified character buffer.

  • Method Details

    • 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. If the length of the specified character buffer is zero, then no characters will be read and zero will be returned.
      Parameters:
      cb - the buffer to read characters into
      Returns:
      The number of char values added to the buffer, possibly zero, 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, even if its length is zero