title: count occurrences of strings from a text file in Java
body: <p>I am trying to count the number of occurrences of days of the week in a textfile. As of right now my code counts the total number of occurrences but I need it to count the number of individual occurrences of each keyword. The output needs to look like this</p>
  
  <pre><code>Monday = 1
  Tuesday = 2
  Wednesday = 0
  </code></pre>
  
  <p>etc.</p>
  
  <p>Here's my code so far</p>
  
  <pre><code>import java.io.BufferedReader;
  import java.io.FileNotFoundException;
  import java.io.FileReader;
  import java.io.IOException;
  import java.util.Map;
  import java.util.HashMap;
  
  public class DayCounter
  {
  
  public static void main(String args[]) throws IOException 
  {
  
      String[] theKeywords = { "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"};
  
      // put each keyword in the map with value 0 
      Map&lt;String, Integer&gt; DayCount = new HashMap&lt;String, Integer&gt;();
      for (String str : theKeywords)
      {
          DayCount.put(str, 0);
      }
  
      try (BufferedReader br = new BufferedReader(new FileReader("C:\\Eclipse\\test.txt")))
      {
  
          String sCurrentLine;
  
          // read lines until reaching the end of the file
          while ((sCurrentLine = br.readLine()) != null) 
          {
  
  
              if (sCurrentLine.length() != 0) 
              {
  
                  // extract the words from the current line in the file
                  if (DayCount.containsKey(sCurrentLine))
                  {
                      DayCount.put(sCurrentLine, DayCount.get(sCurrentLine) + 1);
                  }
              }
          }
  
      } 
      catch (FileNotFoundException exception)
      {
  
          exception.printStackTrace();
      } 
      catch (IOException exception) 
      {
  
          exception.printStackTrace();
      } 
  
  
      int count = 0;
      for (Integer i : DayCount.values()) 
      {
          count += i;
      }
  
      System.out.println("\n\nCount = " + count);
  }
  }
  </code></pre>