method read() in InputStream class

[mark stone]

when one calls the read() method, typically say in the System.in.read() then which read method is being called and from where ? because the read() method is abstract (as mentioned in the api).
the other read methods in InputStream class
read(byte[] b) and read(byte[] b, int off, int len) are not abstract though. I know that they are not being called, ijust mentioned it because my next question deals with this.
second question about the buffer b. We could access the array b ? right ? is this why this buffer has been provided so that one may access the contents of this buffer ? if not what is the purpose.

[mark stone]

List i need your help with this one.

Originally posted by mark stone:
when one calls the read() method, typically say in the System.in.read() then which read method is being called and from where ? because the read() method is abstract (as mentioned in the api).
the other read methods in InputStream class
read(byte[] b) and read(byte[] b, int off, int len) are not abstract though. I know that they are not being called, ijust mentioned it because my next question deals with this.
second question about the buffer b. We could access the array b ? right ? is this why this buffer has been provided so that one may access the contents of this buffer ? if not what is the purpose.

[Jason Kretzer]

Yes, I THINK the buffer is there so that you can have access to those bytes. You pass the array object to the read method and it fills it for you.

[Jason Kretzer]

Here is some code:

  is = someObject.getInputStream(je);
  bi = new BufferedInputStream(is,16384);
  fos = new FileOutputStream(fileList[i]);
  bo = new BufferedOutputStream(fos,16384);
  
  byte [] byteArray = new byte[16384];
  int intRead = bi.read(byteArray, 0,byteArray.length);
  bo.write(byteArray, 0, intRead);
  bo.flush();
  

Hope this helps!