2020-05-exceptions-18.java

protected Throwable(String message,
                    Throwable cause,
                    boolean enableSuppression,
                    boolean writableStackTrace) {

    if (writableStackTrace) {
        fillInStackTrace();
    }
    else {
        stackTrace = null;
    }

    detailMessage = message;
    this.cause = cause;

    if (!enableSuppression) {
        suppressedExceptions = null;
    }
}