How to execute a static method twice

Question

Hi all,
In the attached code, as you can see I call the method at.sendRequestString(), twice from main() method.
The first line in sendRequestString() method is Authenticator.setDefault(new MyAuthenticator());
Authenticator is an abstract class and setDefault is a static method in that class.
When I call sendRequestString() for the second time, Authenticator.setDefault(new MyAuthenticator()); is not executed. ie; Authenticator.setDefault gets executed once and only once.
Does this happen because that Authenticator.setDefault is a static method and it will be executed only once?
If yes, how can I make it work for the second time?
Here is my simple Java code. The username and password given in the code are just sample ones.
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.Authenticator;
import java.net.MalformedURLException;
import java.net.PasswordAuthentication;
import java.net.URL;
public class GetAuthenticatedData
     public String address;
     static String username;
     static String password;
     public GetAuthenticatedData(String address){
          this.address = address;
     public String sendRequestString()
          Authenticator.setDefault(new MyAuthenticator());//BEING STATIC METHOD, SET DEFAULT CALLED ONLY ONCE
         String str = null;
         try {
             URL url = new URL(address);
             BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream()));
             while (( str = in.readLine()) != null) {
                  return str;
             in.close();
         } catch (MalformedURLException e) {
              System.out.println("e1"+e);
         } catch (IOException e) {
              System.out.println("e2"+e);
         Authenticator.setDefault(null);
          return str;
     public static void main(String args[]){
          username = "username1";
          password = "password1";
          GetAuthenticatedData at = new GetAuthenticatedData("https://" + username +":"+ password + "@www.mybooo.com/core/Dd002wW.php?data={action:'contacts',args:''}");
          System.out.println("value corresponding to username1 and password1"+at.sendRequestString());
          username = "username2";
          password = "password2";
          at = new GetAuthenticatedData("https://" + username +":"+ password + "@www.mybooo.com/core/Dd002wW.php?data={action:'contacts',args:''}");
          System.out.println("value corresponding to username2 and password2 "+at.sendRequestString());
class MyAuthenticator extends Authenticator {
     public MyAuthenticator(){
          getPasswordAuthentication();
          protected PasswordAuthentication getPasswordAuthentication() {
               PasswordAuthentication auth = new PasswordAuthentication(GetAuthenticatedData.username, GetAuthenticatedData.password.toCharArray());
             System.out.println("Username"+auth.getUserName());
             System.out.println("Password"+new String(auth.getPassword()));
               return auth;
}Please help with an appropriate solution.
Any help in this regard will be well appreciated with dukes.
Anees

Answer 1

Thanks for your valuable help Looce. But it still does not solve the problem.
Here is how I used your code.
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.Authenticator;
import java.net.MalformedURLException;
import java.net.PasswordAuthentication;
import java.net.URL;
public class GetAuthenticatedData
     public String address;
     static String username;
     static String password;
     public GetAuthenticatedData(String address){
          this.address = address;
     MyAuthenticator authenticator = new MyAuthenticator("username1","password1".toCharArray());
     public String sendRequestString(String user, String pass)
          authenticator.setUsername(user);
          authenticator.setPassword(pass.toCharArray());
          Authenticator.setDefault(authenticator);
         String str = null;
         try {
             URL url = new URL(address);
             BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream()));
             while (( str = in.readLine()) != null) {
                  return str;
             in.close();
         } catch (MalformedURLException e) {
              System.out.println("e1"+e);
         } catch (IOException e) {
              System.out.println("e2"+e);
         Authenticator.setDefault(null);
          return str;
     public static void main(String args[]){
          username = "username1";
          password = "password1";
          GetAuthenticatedData at = new GetAuthenticatedData("https://" + username +":"+ password + "@www.mybooo.com/core/Dd002wW.php?data={action:'contacts',args:''}");
          System.out.println("value corresponding to username1 and password1"+at.sendRequestString("username1","password1"));
          username = "username2";
          password = "password2";
          at = new GetAuthenticatedData("https://" + username +":"+ password + "@www.mybooo.com/core/Dd002wW.php?data={action:'contacts',args:''}");
          System.out.println("value corresponding to username2 and password2 "+at.sendRequestString("password2","password2"));
* This class implements an Authenticator whose username and password information can
* change over time.
* @author Cynthia G., Sun Java forums: http://forums.sun.com/thread.jspa?messageID=10504183
class MyAuthenticator extends java.net.Authenticator {
  /** Stored user name. */
  private String username;
  /** Stored password. */
  private char[] password;
  /** Constructs an instance of MyAuthenticator with the given initial user name
   * and password. These may be modified with the setUsername and setPassword
   * methods.
  public MyAuthenticator(String username, char[] password) {
    this.username = username;
    this.password = password;
  public void setUsername(String username) { this.username = username; }
  public void setPassword(char[] password) { this.password = password; }
  protected java.net.PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication(username, password); }
}