1    
2            package arrayplay;
3    
4    import java.io.File;
5    import java.io.FileNotFoundException;
6    import java.io.IOException;
7    import java.io.PrintWriter;
8    import java.lang.reflect.Array;
9    import java.util.ArrayList;
10   import java.util.Scanner;
11   
12   public class ReverseCopy {
13   
14       public static void main(String[] args) throws FileNotFoundException, IOException {
15           String inputFileName = "cool.txt";
16           String outputFileName = "coolReversed.txt";
17           ArrayList<String> words = readWordsFromFile(inputFileName);
18           writeWordsToFile(words, outputFileName);
19       }
20   
21       private static ArrayList<String> readWordsFromFile(String inputFileName)
22               throws FileNotFoundException {
23           // Equate a scanner with the input file
24           Scanner scanner = establishScanner(inputFileName);
25           // Read the words from the file into a dynamically growing ArrayList
26           ArrayList<String> words = new ArrayList<>();
27           while (scanner.hasNext()) {
28               String word = scanner.next();
29               words.add(word);
30           }
31           // Return the words
32           return words;
33       }
34   
35       private static void writeWordsToFile(ArrayList<String> words, String outputFileName)
36               throws IOException {
37           // Equate a printer with an output file
38           PrintWriter printer = getPrintWriter(outputFileName);
39           //Print words to the file
40           for (int x = words.size()-1; x >= 0; x = x - 1) {
41               printer.println(words.get(x));
42           }
43           printer.close();
44       }
45   
46       private  static Scanner establishScanner(String inputFileName)
47               throws FileNotFoundException {
48           String fullFileName = createFullFileName(inputFileName);
49           return new Scanner(new File(fullFileName));
50       }
51   
52       private static PrintWriter getPrintWriter(String outputFileName)
53               throws FileNotFoundException {
54           String fullFileName = createFullFileName(outputFileName);
55           PrintWriter printer = new PrintWriter(fullFileName);
56           return printer;
57       }
58       // Create the full file name for a simple file name, assuming that it will be
59       // found in the the CS1Files/data subdirectory of the user's home directory.
60       private static String createFullFileName(String fileName) {
61           String separator = System.getProperty("file.separator");
62           String home = System.getProperty("user.home");
63           String path = home + separator + "CS1Files" + separator + "cool.txt" + separator;
64           String fullFileName = path + fileName;
65           return fullFileName;
66       }
67   
68   
69   }
70   
71