Стоит ли использовать this?

public class ZabbixApi {
 
    GenerateRequests GR;
    SendRequests SR;
    ParseResponses PR;
    JSONObject request;
    JSONObject response;
 
    public ZabbixApi() {
        this.GR = new GenerateRequests();
        this.SR = new SendRequests();
        this.PR = new ParseResponses();
        this.request = new JSONObject();
        this.response = new JSONObject();
    }
 
    public String getAuthKey() throws IOException, MalformedURLException, ParseException {
        this.request = this.SR.send(this.GR.getAuthJSON());
 
        return this.PR.parseAuthKey(this.request);
    }
 
    public float getAvailability(String startDate, String endDate,
            String datasourceID, String authKey) throws IOException, ParseException, java.text.ParseException {
        this.request = this.GR.getAvailabilityJSON(startDate, endDate, datasourceID, authKey);
        this.response = this.SR.send(this.request);
 
        return PR.parseAvailability(datasourceID, this.response);
    }

class Cool {
    private int lol;
    private int atata;
 
    void method1(int lol) {
        this.lol = lol;
    }
 
    void method2(int a) {
        atata = i;
    }
}