Java Program TextFile Issue

Question

J'ai un programme dans lequel un fichier texte est lu, puis chaque mot du fichier est sorti, suivi du nombre de fois qu'il est répété dans le fichier.

Answer 1

Utilisez le code suivant.

import java.io.*; 

class FileRead { 

public static void main(String args[]) { 
    try { 
     // Open the file that is the first 
     // command line parameter 
     FileInputStream fstream = new FileInputStream("C:\\Users\\Desktop\\formate.txt"); 
     // Get the object of DataInputStream 
     DataInputStream in = new DataInputStream(fstream); 
     BufferedReader br = new BufferedReader(new InputStreamReader(in)); 
     String strLine; 
     //Read File Line By Line 
     while ((strLine = br.readLine()) != null) { 
      // Print the content on the console 
      System.out.println(strLine); 
     } 
     //Close the input stream 
     in.close(); 
    } catch (Exception e) {//Catch exception if any 
     System.err.println("Error: " + e.getMessage()); 
    } 
    } 
} 

Answer 2

Essayez ce code:

public static void main(String[] args) throws Throwable 
{ 
    File inputFile = new File("input.txt"); 
    File outputFile = new File("output.txt"); 
    Scanner scanner = new Scanner(inputFile); 
    HashMap<String, Integer> count = new HashMap<String, Integer>(); 

    while (scanner.hasNext()) 
    { 
     String word = scanner.next(); 
     if (count.containsKey(word)) 
     { 
      count.put(word, count.get(word) + 1); 
     } 
     else 
     { 
      count.put(word, 1); 
     } 
    } 
    scanner.close(); 

    BufferedWriter writer = new BufferedWriter(new FileWriter(outputFile)); 
    for (Entry<String, Integer> entry : count.entrySet()) 
    { 
     writer.write("#" + entry.getKey() + " " + entry.getValue()+"\r\n"); 
    } 
    writer.close(); 
} 

Answer 3

Il en est, il est beaucoup plus simple si vous ne pouvez pas utiliser HashMap ou BufferedReader:

import java.io.BufferedWriter; 
import java.io.File; 
import java.io.FileWriter; 
import java.io.IOException; 
import java.util.LinkedList; 
import java.util.Scanner; 

public class WordCounter 
{ 
    public static void main(String[] args) throws Throwable 
    { 
     File inputFile = new File("input.txt"); 
     File outputFile = new File("output.txt"); 
     Scanner scanner = new Scanner(inputFile); 
     LinkedList<Word> words = new LinkedList<Word>(); 

     while (scanner.hasNext()) 
     { 
      String word = scanner.next(); 
      addWord(words, word); 
     } 
     scanner.close(); 

     WriteToFile(outputFile, words); 
    } 

    private static void WriteToFile(File outputFile, LinkedList<Word> words) throws IOException 
    { 
     BufferedWriter writer = new BufferedWriter(new FileWriter(outputFile)); 
     for (Word word : words) 
     { 
      writer.write("#" + word.getWord() + " " + word.getCount() + "\r\n"); 
     } 
     writer.close(); 
    } 

    private static void addWord(LinkedList<Word> words, String word) 
    { 
     for (Word aWord : words) 
     { 
      if (aWord.getWord().equals(word)) 
      { 
       aWord.incrementCount(); 
       return; 
      } 
     } 
     words.add(new Word(word, 1)); 
    } 
} 

class Word 
{ 
    private String word; 
    private int count; 

    public Word(String word, int count) 
    { 
     this.word = word; 
     this.count = count; 
    } 

    public String getWord() 
    { 
     return word; 
    } 

    public void setWord(String word) 
    { 
     this.word = word; 
    } 

    public int getCount() 
    { 
     return count; 
    } 

    public void setCount(int count) 
    { 
     this.count = count; 
    } 

    public void incrementCount() 
    { 
     count++; 
    } 

    @Override 
    public String toString() 
    { 
     return "Word: " + word + " Count: " + count; 

    } 

}