@Override
    public void configure(Map<String, ?> configs) {
        final SimpleConfig simpleConfig = new SimpleConfig(CONFIG_DEF, configs);
        final String field = simpleConfig.getString(FIELD_CONFIG);
        final String type = simpleConfig.getString(TARGET_TYPE_CONFIG);
        String formatPattern = simpleConfig.getString(FORMAT_CONFIG);
        final String unixPrecision = simpleConfig.getString(UNIX_PRECISION_CONFIG);
        schemaUpdateCache = new SynchronizedCache<>(new LRUCache<>(16));
        replaceNullWithDefault = simpleConfig.getBoolean(REPLACE_NULL_WITH_DEFAULT_CONFIG);

        if (type.equals(TYPE_STRING) && Utils.isBlank(formatPattern)) {
            throw new ConfigException("TimestampConverter requires format option to be specified when using string timestamps");
        }
        SimpleDateFormat format = null;
        if (!Utils.isBlank(formatPattern)) {
            try {
                format = new SimpleDateFormat(formatPattern);
                format.setTimeZone(UTC);
            } catch (IllegalArgumentException e) {
                throw new ConfigException("TimestampConverter requires a SimpleDateFormat-compatible pattern for string timestamps: "
                        + formatPattern, e);
            }
        }
        config = new Config(field, type, format, unixPrecision);
    }
Convert from the universal java.util.Date format to the type-specific format
connect/transforms/src/main/java/org/apache/kafka/connect/transforms/TimestampConverter.java