Difficult to understand how eventlisteners work in Java?

Question

Greetings dear fellow programmers

Are you all right? I hope so

I’m doing this publication because I’m having a lot of difficulty to understand a specific parameter of the listeners of Android Studio, in specific of Onclick, and as I realized that many functions of the development environment carry this same structure, I decided to do this topic

The code in question proposed by the exercise is as follows:.

public class MainActivity extends AppCompatActivity {

private EditText precoGasolina;
private EditText precoEtanol;
private Button botaoVerificar;
private TextView textoResultado;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    precoGasolina =(EditText)findViewById(R.id.txt_gasolina);
    precoEtanol = (EditText)findViewById(R.id.txt_etanol);
    textoResultado = (TextView)findViewById(R.id.lbl_resultado);
    botaoVerificar = (Button)findViewById(R.id.btn_calcular);

    botaoVerificar.setOnClickListener(new View.OnClickListener(){
        @Override
        public void onClick(View v){
            //Recupera valores digitados
            String textoPrecoAlcool = precoEtanol.getText().toString();
            String textoPrecoGasolina = precoGasolina.getText().toString();
            //Conveterter valores strings para numeros;
            Double valorEtanol = Double.parseDouble(textoPrecoAlcool);
            Double valorGasolina = Double.parseDouble(textoPrecoGasolina);

            double resultado = valorEtanol/valorGasolina;

            if (resultado >= 0.7){
                textoResultado.setText(resultado + "É melhor utilizar gasolina");
            }else{
                textoResultado.setText(resultado + "É melhor utilizar Etanol");
            }
        }
    });
}
}

My big doubt lies within the

onClick(View v){

I know what the View v argument works for, it serves to access button attributes, but my doubt is how I can pass an argument without referencing the button and it can interpret that I’m treating the button object?