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Mar 22nd, 2018
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  1. package ru.schepin.chapter5.textFile;
  2.  
  3. import java.io.*;
  4. import java.util.ArrayList;
  5. import java.util.Arrays;
  6. import java.util.TreeSet;
  7.  
  8. public class TextFile extends ArrayList<String> {
  9. public static String read(String filename) throws IOException {
  10. StringBuilder stringBuilder = new StringBuilder();
  11.  
  12. try (BufferedReader bufferedReader =
  13. new BufferedReader(new FileReader(new File(filename).getAbsoluteFile()))) {
  14. String s;
  15. while ((s = bufferedReader.readLine()) != null) {
  16. stringBuilder.append(s).append("\n");
  17. }
  18. }
  19. return stringBuilder.toString();
  20. }
  21.  
  22. public static void write(String fileName, String text) throws FileNotFoundException {
  23. try (PrintWriter printWriter = new PrintWriter
  24. (new File(fileName).getAbsoluteFile())) {
  25. printWriter.print(text);
  26. }
  27. }
  28.  
  29. public TextFile(String fileName, String splitter) throws IOException {
  30. super(Arrays.asList(read(fileName).split(splitter)));
  31. if (get(0).equals("")) remove(0);
  32.  
  33. }
  34.  
  35. public TextFile(String fileName) throws IOException {
  36. this(fileName, "\n");
  37. }
  38.  
  39. public void write(String fileName) throws FileNotFoundException {
  40. try (PrintWriter pr = new PrintWriter(new File(fileName).getAbsoluteFile())) {
  41. for (String item : this) {
  42. pr.println(item);
  43. }
  44. }
  45. }
  46.  
  47. public static void main(String[] args) throws IOException {
  48. String text = read("C:\\Users\\Dmitry\\Desktop\\Задача по Maven.txt");
  49. write("TextFile", text);
  50.  
  51. TextFile file = new TextFile("TextFile");
  52. file.write("TextFile1");
  53.  
  54. TreeSet<String> words = new TreeSet<>(new TextFile("TextFile1", "\\W+"));
  55. System.out.println(words.headSet("a"));
  56.  
  57. }
  58.  
  59.  
  60. }
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