Android Studio:我想删除数字中的逗号，但删除逗号后，输出变得奇怪

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        String numberWithCommas = "1,234,567.89";
        String numberWithoutCommas = removeCommas(numberWithCommas);

        // 输出结果
        Log.d("NumberWithoutCommas", numberWithoutCommas);
    }

    private String removeCommas(String number) {
        // 使用replace方法删除逗号
        return number.replace(",", "");
    }
}

import java.text.NumberFormat;
import java.util.Locale;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        String numberWithCommas = "1,234,567.89";
        double numberWithoutCommas = removeCommas(numberWithCommas);

        // 输出结果
        Log.d("NumberWithoutCommas", String.valueOf(numberWithoutComums));
    }

    private double removeCommas(String number) {
        try {
            NumberFormat format = NumberFormat.getInstance(Locale.US);
            Number num = format.parse(number);
            return num.doubleValue();
        } catch (Exception e) {
            e.printStackTrace();
            return 0.0;
        }
    }
}