1 /*
 2  * use arrays to get the song lyrics to "Believer" by Imagine Dragons.
 3  */
 4 package arrayplay;
 5 
 6 import java.io.File;
 7 import java.io.FileNotFoundException;
 8 import java.io.IOException;
 9 import java.io.PrintWriter;
10 import java.util.Scanner;
11 
12 
13 /**
14  *
15  * @author sjenks
16  */
17 public class ReverseCopy {
18 
19     /**
20      * @param args the command line arguments
21      */
22     public static void main(String[] args) throws FileNotFoundException, IOException {
23         String inputFileName = "Believer.text";
24         String outputFileName = "BelieverReversed.text";
25         String [] words = readWordsFromFile (inputFileName);
26         writeWordToFile(words,outputFileName);
27     }
28     
29     private static final int LIMIT = 1000;
30 
31     private static String[] readWordsFromFile(String inputFileName) throws FileNotFoundException {
32         //Equate a scanner with the input file
33         Scanner scanner = establishScanner(inputFileName);
34         //Read the words from the file into an oversized array 
35         String [] temp = new String [LIMIT];
36         int index = 0;
37         while ( scanner.hasNext()){
38             String word = scanner.next();
39             temp [index] = word;
40             index = index + 1;    
41         }
42         int wordCount = index;
43         //Transfer the words to a perfectly sized array
44         String [] words = new String [wordCount];
45         for (int x = 0; x < wordCount; x = x +1) {
46             words [x] = temp[x];
47         }
48         //return the words
49         return words;
50     }
51 
52     private static void writeWordToFile(String[] words, String outputFileName) throws IOException {
53         //Equare a printer with an output file 
54         PrintWriter printer = getPrintWriter(outputFileName);
55         //Print the words to the file
56         for ( int x = words.length-1; x >= 0; x = x-1) {
57             printer.println(words[x]);
58         }
59         printer.close();
60     }
61 
62     private static Scanner establishScanner(String inputFileName) throws FileNotFoundException{
63         String fullFileName = createFullFileName (inputFileName);
64         return new Scanner (new File(fullFileName));
65     }
66 
67     private static PrintWriter getPrintWriter(String outputFileName) throws FileNotFoundException{
68        String fullFileName = createFullFileName(outputFileName);
69        PrintWriter printer = new PrintWriter(fullFileName);
70        return printer; 
71     }
72 
73     //Create the full file name for a simple file name, assuming that it will be 
74     //found in the CS1Files/data subdirectory of the user's home directory.
75     private static String createFullFileName(String fileName) {
76         String separator = System.getProperty("file.separator");
77         String home = System.getProperty("user.home");
78         String path = home + separator + "CS1Files" + separator + "data" + separator;
79         String fullFileName = path + fileName;
80         return fullFileName;
81     }
82     
83 }
84