Earthquake quiz app Java

package com.example.android.earthquake;

import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.text.Editable;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.view.WindowManager;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.TextView;
import android.widget.Toast;

import java.text.NumberFormat;


public class MainActivity extends AppCompatActivity {
    private static final String LOG_TAG = MainActivity.class.getSimpleName();

    // Question 1
    RadioButton question1_choice4;
    // Question 2
    RadioButton question2_choice1;
    // Question 3
    CheckBox question3_choice1;
    CheckBox question3_choice2;
    CheckBox question3_choice3;
    CheckBox question3_choice4;
    // Question 4
    RadioButton question4_choice1;
    // Question 5
    EditText question5_answer;
    // Question 6
    RadioButton question6_choice2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // Hide the keyboard
        this.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
        setContentView(R.layout.activity_main);
    }

    public void submitAnswers(View view) {
        CharSequence resultsDisplay;
        Log.e(LOG_TAG, " " + this.findViewById(R.id.question1_choice4));
        int answer1_score;
        int answer2_score;
        int answer3_score;
        int answer4_score;
        int answer5_score;
        int answer6_score;
        int answer7_score;
        int answer8_score;
        int answer9_score;
        int answer10_score;
        int final_score;

        //------------------------------------------------------------------------------------------
        // Question 1 - Correct Answer is #4 (reverse)
        //------------------------------------------------------------------------------------------
        Boolean answer1;

        question1_choice4 = (RadioButton) this.findViewById(R.id.question1_choice4);
        answer1 = question1_choice4.isChecked();
        if (answer1) {
            answer1_score = 1;
        } else {
            answer1_score = 0;
        }
//------------------------------------------------------------------------------------------
        // Question 2 - Correct Answer is #1 (Strike-slip)
        //------------------------------------------------------------------------------------------
        Boolean answer2;

        question2_choice1 = (RadioButton) this.findViewById(R.id.question2_choice1);
        answer2 = question2_choice1.isChecked();
        if (answer2) {
            answer2_score = 1;
        } else {
            answer2_score = 0;
        }
//------------------------------------------------------------------------------------------
        // Question 3  - Correct Answers are #3 (Strike-slip) and #4 (Left-lateral strike-slip)
        //------------------------------------------------------------------------------------------
        Boolean answer3_choice1;
        Boolean answer3_choice2;
        Boolean answer3_choice3;
        Boolean answer3_choice4;
        question3_choice1 = (CheckBox) this.findViewById(R.id.question3_choice1);
        question3_choice2 = (CheckBox) this.findViewById(R.id.question3_choice2);
        question3_choice3 = (CheckBox) this.findViewById(R.id.question3_choice3);
        question3_choice4 = (CheckBox) this.findViewById(R.id.question3_choice4);
        answer3_choice1 = question3_choice1.isChecked();
        answer3_choice2 = question3_choice2.isChecked();
        answer3_choice3 = question3_choice3.isChecked();
        answer3_choice4 = question3_choice4.isChecked();
        if (!answer3_choice1 && !answer3_choice2 && answer3_choice3 && answer3_choice4) {
            answer3_score = 1;
        } else {
            answer3_score = 0;
        }
//------------------------------------------------------------------------------------------
        // Question 4 - Correct Answer is #1 (Normal)
        //------------------------------------------------------------------------------------------
        Boolean answer4;

        question4_choice1 = (RadioButton) this.findViewById(R.id.question4_choice1);
        answer4 = question4_choice1.isChecked();
        if (answer4) {
            answer4_score = 1;
        } else {
            answer4_score = 0;
        }
//------------------------------------------------------------------------------------------
        // Question 5 - Correct Answer is "Seismograph"
        //------------------------------------------------------------------------------------------
        String answer5;
        question5_answer = (EditText) this.findViewById(R.id.question5_answer);
        answer5 = question5_answer.getText().toString().toLowerCase();
        if (answer5.equals("seismograph")) {
            answer5_score = 1;
        } else {
            answer5_score = 0;
        }

//------------------------------------------------------------------------------------------
        // Question 6 - Correct Answer is #2 (No)
        //------------------------------------------------------------------------------------------
        Boolean answer6;

        question6_choice2 = (RadioButton) this.findViewById(R.id.question6_choice2);
        answer6 = question6_choice2.isChecked();
        if (answer6) {
            answer6_score = 1;
        } else {
            answer6_score = 0;
        }

//------------------------------------------------------------------------------------------
        // Final Score
        //------------------------------------------------------------------------------------------
        final_score = answer1_score + answer2_score + answer3_score + answer4_score + answer5_score +
                answer6_score;

        if (final_score == 6) {
            resultsDisplay = "Great Job! You scored 6 out of 6";
        } else {
            resultsDisplay = "You need to study more. You scored " + final_score + " out of 6";
        }

        Context context = getApplicationContext();
        int duration = Toast.LENGTH_LONG;
        Toast toast = Toast.makeText(context, resultsDisplay, duration);
        toast.setGravity(Gravity.CENTER, 0, 0);
        toast.show();
    }
}