title: Reject String If Contains Any Non-Alpha Numeric Character
body: <p>I am writing a program and want the program to not loop and request another search pattern if the search pattern (word) contains any non alpha numeric characters.</p>
  
  <p>I have setup a Boolean word to false and an if statement to change the Boolean to true if the word contains letters or numbers. Then another if statement to allow the program to execute if the Boolean is true.</p>
  
  <p>My logic must be off because it is still executing through the search pattern if I simply enter "/". The search pattern cannot contain any non alpha numeric characters to include spaces. I am trying to use Regex to solve this problem. </p>
  
  <p>Sample problematic output:</p>
  
  <pre><code>Please enter a search pattern: /
  Line number 1
  this.a 2test/austin
              ^
  
  Line number 8
  ra charity Charityis 4 times a day/a.a-A
                                    ^
  </code></pre>
  
  <p>Here is my applicable code:</p>
  
  <pre><code>while (again) {
  
     boolean found = false;
     System.out.printf("%n%s", "Please enter a search pattern: ", "%n");
     String wordToSearch = input.next();
  
     if (wordToSearch.equals("EINPUT")) {
        System.out.printf("%s", "Bye!");
        System.exit(0);
     }
  
     Pattern p = Pattern.compile("\\W*");
     Matcher m = p.matcher(wordToSearch);
  
     if (m.find())
        found = true;
  
     String data;
     int lineCount = 1;
  
     if (found = true) {
        try (FileInputStream fis = 
                   new FileInputStream(this.inputPath.getPath())) {
           File file1 = this.inputPath;
           byte[] buffer2 = new byte[fis.available()];
           fis.read(buffer2);
           data = new String(buffer2);
           Scanner in = new Scanner(data).useDelimiter("\\\\|[^a-zA-z0-9]+");
           while (in.hasNextLine()) {
  
              String line = in.nextLine();
  
              Pattern pattern = Pattern.compile("\\b" + wordToSearch + "\\b");
              Matcher matcher = pattern.matcher(line);
  
              if (matcher.find()) {
                 System.out.println("Line number " + lineCount);
                 String stringToFile = f.findWords(line, wordToSearch);
                 System.out.println();
              }
              lineCount++;
           }
        }
     }
  }
  </code></pre>