Pastable version of Email addresses validator

<pre class='prettyprint' language='java'>import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class Validator {
    private static final String ORG_FILE = &quot;org.txt&quot;;
    private static final String NEW_FILE = &quot;new.txt&quot;;
    
    public static void main(String[] args) throws IOException {
        filterEmailsFile();
    }
    
    private static void filterEmailsFile() throws IOException {
        File file = new File(ORG_FILE);
        BufferedReader in = new BufferedReader(new FileReader(file));
        try {
            PrintWriter pw = new PrintWriter(new FileWriter(NEW_FILE));
            List&lt;String&gt; emails = new ArrayList&lt;String&gt;();
            try {
                EmailValidator emailValidator = new EmailValidator();
                while (true) {
                    String email = in.readLine();
                    if (email == null) break;

email = email.replaceAll(&quot;\\s&quot;, &quot;&quot;);
                    if (emailValidator.isValid(email)) emails.add(email);
                }
                Collections.sort(emails);
                for (String email : emails) {
                    pw.println(email);
                }
            } finally {
                pw.close();
            }
        } finally {
            in.close();
        }
    }
}

===========================================================================

import java.util.regex.Pattern;

public class EmailValidator {
    private final Pattern pattern;
    
    public EmailValidator(){
        pattern = Pattern.compile(&quot;^\\w+(\\.\\w+)*@\\w+(\\.\\w+)*\\.\\p{Alpha}+$&quot;);
    }
    
    public boolean isValid(String email) {
        return pattern.matcher(email).matches();
    }
}</pre>
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Pastable version of Email addresses validator