class anonymous class derived from onclicklistener must either be declared ?

public class MainActivity extends AppCompatActivity {

    privateString[] items = {"mango juice", "tomato juice", "grape juice"};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Button listButton = (Button) findeViewById(R.id.listButton);
        listButton.setOnClickListener(new View.OnClickListener()  {
            @Override
            public void Onclick(View v) {
                AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
                builder.setTitle ("list");
                bulider.setItems(items, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialogInterface, int i) {
                        Toast.makeText(getApplicationContext(), items[i], Toast.LENGTH_SHORT).show();
                    }
                });
                AlertDialog alertDialog = builder.create();
                alertDialog.show();
            }
        });
    }
}

listButton.setOnClickListener(new View.OnClickListener()  {