| Source File | Description |
| FileOps.java | A number of examples of how to use the java.io.File - an abstraction of the underlying operating system File object (or file handle). |
| ReadConsole.java | Read text (Strings) from the console and echo them back at the end. |
| ReadFile.java | Read text from a file and echo it to the console. |
| WriteFile.java | Read text from the console and write it to a file. |
| WriteBankRecordFile.java | Read text from the console, create a BankRecord object and write it to a file (in plain text). Compare the output of this program with the output of ATMSimulator and ATMSimulatorOS. |
| BankRecord.java | A class that represents a Bank transactions. |
| ATMSimulator.java | A bad ATM simulator using traditional binary I/O. |
| ATMSimulatorOS.java | A bad ATM simulator using ObjectSerialization. |
| BalanceCalculator.java | Reads the transaction file created by ATMSimulator and calculates a balance. |
| BalanceCalculatorOS.java | Reads the transaction file created by ATMSimulatorOS and calculates a balance. This is a solution to our in-class exercise to convert BalanceCalculator to read the data written by ATMSimulatorOS. |
| JTail.java | A simple Java implementation of the UNIX tail utility, except ours doesn't support STDIN yet. This example demonstrates the use of the RandomAccessFile (though we are still doing sequential reads). |
| Class versions | The source files we used in classes, including any modifications that we made in the process of discussion. |