[Demonstration 1]

[Buggy Method]
public void setFieldName(String fieldName) {
    this.fieldName = formatFieldName(fieldName);
}

[Buggy Hunk]
this.fieldName = formatFieldName(fieldName);

[Patch]
this.fieldName = DbController.formatFieldName(fieldName);

[Demonstration 2]

[Buggy Method]
public static String getValidityInfoForSizeCappedNonEmptyString(String fieldName, int maxLength, String value) {
    Assumption.assertTrue("Non-null value expected for " + fieldName, value != null);
    if (value.isEmpty()) {
        return getPopulatedErrorMessage(SIZE_CAPPED_NON_EMPTY_STRING_ERROR_MESSAGE, value, fieldName, REASON_EMPTY, maxLength);
    }
    if (FieldValidator.isUntrimmed(value)) {
        return WHITESPACE_ONLY_OR_EXTRA_WHITESPACE_ERROR_MESSAGE.replace("${fieldName}", fieldName);
    }
    String sanitizedValue = SanitizationHelper.sanitizeForHtml(value);
    if (value.length() > maxLength) {
        return getPopulatedErrorMessage(SIZE_CAPPED_NON_EMPTY_STRING_ERROR_MESSAGE, sanitizedValue, fieldName, REASON_TOO_LONG, maxLength);
    }
    return "";
}

[Buggy Hunk]
public static String getValidityInfoForSizeCappedNonEmptyString(String fieldName, int maxLength, String value) {

[Patch]
public String getValidityInfoForSizeCappedNonEmptyString(String fieldName, int maxLength, String value) {

[Demonstration 3]

[Buggy Method]
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Bundle b = getArguments();
    String fileName = b.getString(ARG_FILE, "");
    Log.i("FLA", "Create: " + fileName);
    int page = b.getInt(ARG_PAGE, -1);
    reset(fileName, page);
}

[Buggy Hunk]
reset(fileName, page);

[Patch]
reset(fileName, page, false);