Update datetime and a string in Memo field using Java and UCanAccess - jdbc

Question

I want to update datetime and a string in Memo field using UCanAccess. For example - 5/27/2015 System : some string, this is all I have to update in memo field.
What I have tried - I am converting date to a string using following code:
DateFormat df = new SimpleDateFormat("yyyyMMdd");
Date today = Calendar.getInstance().getTime();
String reportDate = df.format(today);
and then using update query of ucanaccess like this:
st.executeUpdate(" update tblCaseInventory set fldContactNotes = " + reportDate + "' System : CAR Report '" + " where fldCaseNumber = " + rs1.getInt("fldCaseNumber"));
but I am getting an error:
Unexpected token : System.
How to achieve this?

Answer 1

You should use a PreparedStatement to run a parameterized query, something like this:
String sql =
"UPDATE tblCaseInventory " +
"SET fldContactNotes=? " +
"WHERE fldCaseNumber=? ";
try (PreparedStatement ps = conn.prepareStatement(sql)) {
DateFormat df = new SimpleDateFormat("yyyyMMdd");
java.util.Date today = Calendar.getInstance().getTime();
String reportDate = df.format(today);
ps.setString(1, reportDate + " System : CAR Report");
ps.setInt(2, rs1.getInt("fldCaseNumber"));
ps.executeUpdate();
}