[Demonstration 1]

[Buggy Method]
public static Long getUTCTimestamp(String dateTime) {
    SimpleDateFormat dateFormat = new SimpleDateFormat(DATE_FORMAT, Locale.getDefault());
    dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
    try {
        return dateFormat.parse(dateTime).getTime();
    } catch (ParseException e) {
        return null;
    }
}

[Buggy Hunk]
return dateFormat.parse(dateTime).getTime();

[Patch]
return dateFormat.parse(dateTime).getTime() / 1000;

[Demonstration 2]

[Buggy Method]
public void updateData(LinkedList<PopularTag> list) {
    rebind(getContext());
    chartscale.setMaximum(list.getFirst().getTagPopularity()).build();
    RecyclerView.Adapter<ResponseChartAdapter.ViewHolder> adapter = new ResponseChartAdapter(list, getContext());
    RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getContext(), LinearLayoutManager.HORIZONTAL, false);
    chartlist.setLayoutManager(mLayoutManager);
    chartlist.setItemAnimator(new DefaultItemAnimator());
    chartlist.setAdapter(adapter);
}

[Buggy Hunk]
.setMaximum(list.getFirst().getTagPopularity())

[Patch]
.setMaximum(list.isEmpty()?0:list.getFirst().getTagPopularity())

[Demonstration 3]

[Buggy Method]
private static String format(String format) {
    return I18n.format(format);
}

[Buggy Hunk]
private static String format(String format)

[Patch]
private String format(String format)