Problème de code authentification

salut j'ai essayé avec ce code j'ai aucune erreur mais le probléme quand je démarre emulator je tombe sur message the application (process cim.example.sanplesync.authentficator has stopped unexpectedly ,please try again
voila le code

Code:

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package com.example.android.samplesync.authenticator;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.Authenticator;
import java.net.PasswordAuthentication;
import java.net.URL;
 
import android.app.Activity;
 
public class Connect extends Activity{
 
    static final String kuser = "test"; // your account name
    static final String kpass = "temp"; // your password for the account
    private String m_path;
 
    static class MyAuthenticator extends Authenticator {
        public PasswordAuthentication getPasswordAuthentication() {
        	PasswordAuthentication pa = new PasswordAuthentication(kuser, kpass.toCharArray());
            return pa;
        }
    }
 
    public Connect(String path) {
     m_path = path;
    }
 
    public BufferedReader WebsiteString() throws Exception {
     Authenticator.setDefault(new MyAuthenticator());
     URL url = new URL(m_path);
 
        InputStream ins = url.openConnection().getInputStream();
        BufferedReader reader = new BufferedReader(new InputStreamReader(ins));
        return reader;
    }
}