do while loop

public class MainActivity extends AppCompatActivity {

    TextView textview;
    Button button;
    EditText edittext;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        textview = findViewById(R.id.textview);
        button = findViewById(R.id.button);
        edittext = findViewById(R.id.edittext);

        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

              int i=1;
              do{
                 textview.append(+i+"  Bangladesh\n");
                 i++;
              }while (i<=5);

                int x=1;
                do{
                    textview.append(+x+"\n");
                    x=x+2;
                }while (x<=10);


            }
        });

    }

}