Homework: Java File I/O

This homework is necessary preparation for the lab. Make sure you type your code and you bring the file to the lab so that you will not have to waste time entering it during the lab.

1. Write a main program that copies a given text file into another file using SimpleReader to read the input file and SimpleWriter to write the output file. The names of the input text file to be copied and of the destination file where the copy is to be saved are provided as command-line arguments. Assume that appropriate arguments will be provided and no error checking is necessary. The command-line arguments are accessible by your main program through the String[] args array parameter to the main method. If you need more details about command-line arguments, see Section 7.3, Command Line Arguments, in Java for Everyone.
2. Rewrite the file-copying main program using only the standard java.io classes discussed in class . Assume that appropriate arguments will be provided and no error checking is necessary. Do not handle the possible IOExceptions but simply declare that main may throw an IOException.
3. Copy and modify the previous main program so that it handles all possible IOExceptions and main will not throw any IOException. Output meaningful error message(s) if an IOException occurs.

Additional Questions

1. Copy and modify the previous main program so that it also includes appropriate error checks on the command line arguments, e.g., missing arguments, missing input file, non-readable input file, etc. (The java.io.File class provides helpful methods to check some of the possible errors.)