Questions

1. What class would you use to read a few pieces of data that are at known positions near the end of a large file?

2. In a format call, what's the best way to indicate a new line?

3. How would you append data to the end of a file? Show the constructor for the class you would use and explain your answer.

Exercises

1. Implement a pair of classes, one Reader and one Writer, that count the number of times a particular character, such as e, is read or written. The character can be specified when the stream is created. Write a program to test your classes. You can use xanadu.txt as the input file.

2. The file datafile begins with a single long that tells you the offset of a single int piece of data within the same file. Using the RandomAccessFile class, write a program that gets the int piece of data. What is the int data?

Check your answers.