1    package arrayplay;
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.Scanner;
8    
9    public class ReverseCopy {
10       public static void main (String [] args) throws FileNotFoundException, IOException {
11           String inputFileName = "Forever.txt";
12           String outputFileName = "ForeverReversed.txt";
13           String[] words = readWordsFromFile(inputFileName);
14           writeWordsToFile(words,outputFileName);
15       }
16   
17   private static final int LIMIT = 1000;
18   
19       private static void writeWordsToFile(String[] words, String outputFileName) throws IOException {
20           //equate a printer with an output file
21           PrintWriter printer = getPrintWriter(outputFileName);
22           //print words to the file
23           for(int x = words.length-1; x >= 0; x = x - 1) {
24               printer.println(words[x]);
25           }
26           printer.close();
27       }
28   
29       private static String[] readWordsFromFile(String inputFileName) throws FileNotFoundException {
30           //equate scanner with the input file
31           Scanner scanner = establishScanner(inputFileName);
32           String[] temp = new String[LIMIT];
33           int index = 0;
34           while(scanner.hasNext()) {
35               String word = scanner.next();
36               temp[index] = word;
37               index = index + 1;
38           }
39           int wordCount = index;
40           //transfer the words into a perfectly sized array
41           String[] words = new String[wordCount];
42           for(int x = 0; x < wordCount; x = x + 1) {
43               words[x] = temp[x];
44           }
45           //return the words
46           return words;
47       }
48       private static Scanner establishScanner(String inputFileName) throws FileNotFoundException {
49           String fullFileName = createFullFileName(inputFileName);
50           return new Scanner(new File(fullFileName));
51       }
52   
53       private static PrintWriter getPrintWriter(String outputFileName) throws FileNotFoundException {
54           String fullFileName = createFullFileName(outputFileName);
55           PrintWriter printer = new PrintWriter(fullFileName);
56           return printer;
57                  }
58   
59       private static String createFullFileName(String fileName) {
60           String separator = System.getProperty("file.separator");
61           String home = System.getProperty("user.home");
62           String path = home + separator + "CS1Files" + separator + "data" + separator;
63           String fullFileName = path + fileName;
64           return fullFileName;
65       }
66   }