ReverseCopy.java
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.Scanner;
8    
9    public class ReverseCopy {
10       private static final int LIMIT = 1000;
11   
12       public static void main(String[] args) throws FileNotFoundException, IOException {
13           String inputFileName = "lyricsBob.txt";
14           String outputFileName = "lyrics_return.txt";
15           String[] words = readWordsFromFile(inputFileName);
16           writeWordsToFile(words, outputFileName);
17       }
18   
19       private static String[] readWordsFromFile(String inputFileName) throws FileNotFoundException {
20           String[] temp = new String[LIMIT];
21           int index = 0;
22           Scanner scanner = establishScanner(inputFileName);
23           while ( scanner.hasNext() ) {
24               String word = scanner.next();
25               temp[index] = word;
26               index = index + 1;
27           }
28           int wordCount = index;
29           // Transfer the words
30           String[] words = new String[wordCount];
31   
32           for ( int x=0; x < wordCount; x = x+1 ) {
33               words[x] = temp[x];
34           }
35           // Return the words
36           return words;
37       }
38   
39       private static void writeWordsToFile(String[] words, String outputFileName) throws IOException {
40           PrintWriter printer = getPrintWriter(outputFileName);
41           // Print the words to file
42           for ( int x = words.length-1; x >=0; x=x-1 ) {
43               printer.println(words[x]);
44           }
45           printer.close();
46   
47       }
48   
49       private static Scanner establishScanner(String inputFileName) throws FileNotFoundException {
50           String fullFileName = createFullFileName(inputFileName);
51           return new Scanner(new File(fullFileName));
52       }
53   
54   
55       private static PrintWriter getPrintWriter(String outputFileName) throws FileNotFoundException {
56           String fullFileName = createFullFileName(outputFileName);
57           PrintWriter printer = new PrintWriter(fullFileName);
58           return printer;
59       }
60   
61       private static String createFullFileName(String fileName) {
62           String separator = System.getProperty("file.separator");
63           String home = System.getProperty("user.home");
64           String path = "data" + separator;
65           String fullFileName = path + fileName;
66           return fullFileName;
67       }
68   }
69