[Demonstration 1]

[Buggy Method]
@Override
public void setResult(double amount) {
    resultAmount.setText(String.format("%.1f", amount));
}

[Buggy Hunk]
resultAmount.setText(String.format("%.1f", amount));

[Patch]
resultAmount.setText(String.format(Locale.US, "%.1f", amount));

[Demonstration 2]

[Buggy Method]
public static Result service(String ownerName, String projectName, String service, boolean isAdvertise) throws IOException, UnsupportedOperationException, ServletException {
    if (!isSupportedService(service)) {
        return forbidden(String.format("Unsupported service: '%s'", service));
    }
    Project project = Project.findByOwnerAndProjectName(ownerName, projectName);
    if (project == null) {
        return notFound();
    }
    models.User user = UserApp.currentUser();
    if (!isAllowed(project, service)) {
        if (user.isAnonymous()) {
            return BasicAuthAction.unauthorized(response());
        } else {
            // If you want the Git client showing your custom message to
            // the user, the Content-Type should be exact "text/plain"
            // without any parameter. For more details, see the code at
            // https://github.com/git/git/commit/426e70d4a11ce3b4f70636d57c6a0ab16ae08a00#diff-eea0ad565ec5903a11b6023755d491cfR154
            response().setHeader("Content-Type", "text/plain");
            return forbidden(String.format("'%s' has no permission to '%s/%s'.", user.name, ownerName, projectName));
        }
    }
    if (isAdvertise) {
        return ok(RepositoryService.gitAdvertise(project, service, response()));
    } else {
        if (request().body().isMaxSizeExceeded()) {
            return status(REQUEST_ENTITY_TOO_LARGE);
        } else {
            user.visits(project);
            return ok(RepositoryService.gitRpc(project, service, request(), response()));
        }
    }
}

[Buggy Hunk]
user.name, ownerName, projectName));

[Patch]
user.loginId, ownerName, projectName));

[Demonstration 3]

[Buggy Method]
public static Spannable getFormattedAmountBudgetSavings(double amount, Context context) {
    int color = amount >= 0 ? R.color.green_dark : R.color.red_dark;
    // Get the main currency from the preferences.
    Currency prefCurrency = getPrefCurrency(context);
    // Create a formatter using no decimal digits.
    DecimalFormat df = new DecimalFormat("+ #,##0; - #,##0");
    df.setMaximumFractionDigits(0);
    String currSymbol = prefCurrency.getSymbol().substring(0, 1);
    String amountStr = df.format(amount) + currSymbol;
    Spannable spannable = new SpannableString(amountStr);
    spannable.setSpan(new ForegroundColorSpan(ContextCompat.getColor(context, color)), 0, spannable.length(), 0);
    spannable.setSpan(new StyleSpan(Typeface.BOLD), 0, spannable.length() - 1, 0);
    spannable.setSpan(new SuperscriptSpan(), spannable.length() - currSymbol.length(), spannable.length(), 0);
    spannable.setSpan(new RelativeSizeSpan(0.9f), spannable.length() - currSymbol.length(), spannable.length(), 0);
    return spannable;
}

[Buggy Hunk]
int color = amount >= 0 ? R.color.green_dark : R.color.red_dark;

[Patch]
int color = amount > 0 ? R.color.green_dark : R.color.red_dark;