```
 protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
            setSupportActionBar(toolbar);

      f.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    String url = "https://www.google.co.uk/";

                    Intent i = new Intent(Intent.ACTION_VIEW);
                    i.setData(Uri.parse(url));
                    startActivity(i);
                }
            });

```

//This is what i have so far but it is not loading the URL on the emulator it keeps coming up with:

```
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.Button.setOnClickListener((android.view.View$OnClickListener)' on a null object reference

```

I have tried most things and i cant figure it out for the life of me any help would be appreciated