DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.getDefault());
String currentDate = dateFormat.format(new Date());

expressionList.getExpressions()
                        .add(new TimestampValue(currentDate ));

Caused by: java.lang.IllegalArgumentException: Timestamp format must be yyyy-mm-dd hh:mm:ss[.fffffffff]
	at java.sql.Timestamp.valueOf(Timestamp.java:237)
	at net.sf.jsqlparser.expression.TimestampValue.<init>(TimestampValue.java:34)