What might go wrong inside the outer try{} block which would cause an exception?

A good answer might be:

(1) One of the files might not open. (2) There might be an error in reading from a file. (3) There might be an error in writing to a file. (4) One of the files might not close.

All of those problems are IOExceptions so the outer try{} could catch them all with one catch{} block. But this one block would not be very specific about which type of error it caught. The constructors for FileInputStream and FileOutputStream throw FileNotFoundException when there is a problem. Its catch{} block should preceed the one for IOException.

Here is the program so far:

    . . . . 
    try
    {
      instr = 
      outstr = 
      try
      {
      }
      catch ( EOFException  eof )
      {
      }

    }

    catch( ______________________ )
    {
    }

    catch( ______________________ )
    {
    }

QUESTION 19:

Fill in the blanks.