Serialization

Compare two Files containing two integer

Complete the method below to read two integers from the input file, compare them, and write true or false into the output file based on whether the values are the same or not.

// inputFile: path to input file; outputFile: path to output file
public void compareValues(String inputFile, String outputFile) {
  Scanner scan = null;
  PrintWriter pw = null;
  try {
    scan = new Scanner(new FileReader(inputFile));
    int num1 = scan.nextInt();
    int num2 = scan.nextInt();
    pw = new PrintWriter(new FileWriter(outputFile));
    if (num1 == num2) {
      pw.println("true");
    } else {
      pw.println("false");
    }
  } catch (FileNotFoundException fnfe) {
    System.out.println("fnfe: " + fnfe.getMessage());
  } catch (IOException ioe) {
    System.out.println("ioe: " + ioe.getMessage());
  } finally {
    if (pw != null) {
    pw.close();
    }
    if (scan != null) {
    scan.close();
    }
  }
}

Scanner takes in a FileReader instannce FileReader takes in a path string

ChatRoom Practice -- Serialization in network

1. main thread for connection, and each thread with each client
2. PrintWriter for printing string

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Last update: August 17, 2020