you can do like this

   holder.getContext().startActivity(new Intent(holder.context(),Activity.class))

public class allmain extends AppCompatActivity {

    RecyclerView allfurniture;

    TextView aaa;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.all);
        //allfurniture = (RecyclerView)findViewById(R.id.allfurniture);
        aaa = (TextView) findViewById(R.id.aaa);
        aaa.setText("asdafdfdafaf");
    }
}

here the all named layout file is for fragment class but i want to do coding of recyclerview and adapter class so what to do in it?