1    package arraylistplay;
2    
3    import java.io.File;
4    import java.io.FileNotFoundException;
5    import java.io.IOException;
6    import java.io.PrintWriter;
7    import java.util.ArrayList;
8    import java.util.Scanner;
9    
10   public class ReverseCopy {
11   
12       public static void main(String[] args) throws FileNotFoundException, IOException {
13           String inputFileName = "Machine.text";
14           String outputFileName = "MachineReversed.text";
15           ArrayList<String> words = readWordsFromFile(inputFileName);
16           writeWordsToFile(words, outputFileName);
17   
18       }
19   
20       private static ArrayList<String> readWordsFromFile(String inputFileName) throws FileNotFoundException {
21           Scanner scanner = establishScanner(inputFileName);
22           ArrayList<String> words = new ArrayList<>();
23           while (scanner.hasNext()){
24               String word = scanner.next();
25               words.add(word);
26           }
27           return words;
28       }
29   
30       private static void writeWordsToFile(ArrayList<String> words, String outputFileName) throws IOException {
31           PrintWriter printer = getPrintWriter(outputFileName);
32           for (int x = words.size() - 1; x >= 0; x = x - 1) {
33               printer.println(words.get(x));
34           }
35           printer.close();
36       }
37   
38       private static Scanner establishScanner(String inputFileName) throws FileNotFoundException {
39           String fullFileName = createFullFileName(inputFileName);
40           return new Scanner(new File(fullFileName));
41   
42       }
43   
44       private static PrintWriter getPrintWriter(String outputFileName) throws FileNotFoundException {
45           String fullFileName = createFullFileName(outputFileName);
46           PrintWriter printer = new PrintWriter(fullFileName);
47           return printer;
48       }
49   
50       private static String createFullFileName(String fileName) {
51           String separator = System.getProperty("file.separator");
52           String home = System.getProperty("user.home");
53           String path = home + separator + "CS1Files" + separator + "data" + separator;
54           String fullFileName = path + fileName;
55           return fullFileName;
56       }
57   
58   }
59