How to Convert `Java.lang.String` to `oracle.sql.TIMESTAMPTZ`

How can I convert a `Java.lang.String` to an `oracle.sql.TIMESTAMPTZ` in my Java application?

String dateTimeString = "2023-10-18 15:30:00"; // Example date-time string

To convert a `Java.lang.String` to the `oracle.sql.TIMESTAMPTZ` type in a Java application, you'll need to parse the string into a `java.sql.Timestamp` or `java.time.OffsetDateTime` and then convert it into `TIMESTAMPTZ`. The `oracle.sql.TIMESTAMPTZ` class is used for handling timestamps with time zone information within Oracle databases.

import oracle.sql.TIMESTAMPTZ;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.Timestamp;
import java.time.OffsetDateTime;
import java.time.ZoneOffset;

public class TimestampConversion {
    public void convertToTimestampTz(String dateTimeString, Connection connection) throws Exception {
        // Parse String to OffsetDateTime
        OffsetDateTime odt = OffsetDateTime.parse(dateTimeString);
        // Convert OffsetDateTime to java.sql.Timestamp
        Timestamp timestamp = Timestamp.valueOf(odt.toLocalDateTime());
        // Create TIMESTAMPTZ
        TIMESTAMPTZ timestamptz = TIMESTAMPTZ.valueOf(timestamp);
        String sql = "INSERT INTO my_table (my_column) VALUES (?)";
        try (PreparedStatement ps = connection.prepareStatement(sql)) {
            ps.setObject(1, timestamptz);
            ps.executeUpdate();
        }
    }
}

Causes

• The input string format does not match the expected date-time format.
• Issues with time zone conversions leading to incorrect results.
• Database connectivity problems affecting the insertion of data.

Solutions

• Use `java.sql.Timestamp.valueOf` to convert a string to `Timestamp` without timezone info.
• Convert to `java.time.OffsetDateTime` for more robust handling of time zones and then create a `TIMESTAMPTZ`.
• Ensure the string format follows the 'yyyy-mm-dd hh:mm:ss' pattern to avoid parsing exceptions.

Mistake: Using an incorrect string format for the date-time.

Solution: Ensure the date-time string is formatted as 'yyyy-MM-dd HH:mm:ss' or similar.

Mistake: Not handling time zones properly when creating the TIMESTAMPTZ.

Solution: Use `OffsetDateTime` to manage time zones effectively.