Assignment operator

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 x = 3;
              int y = 2;

                x+=y;  // x = x+y
                textview.append(" x = "+x+"\n");

                x-=y;  // x = x-y
                textview.append(" x = "+x+"\n");

                x*=y;  // x = x*y
                textview.append(" x = "+x+"\n");

                x/=y;  // x = x/y
                textview.append(" x = "+x+"\n");

                x%=y;  // x = x%y
                textview.append(" x = "+x+"\n");


            }
        });

    }

}