java-tutorials/java-dates/src/test/java/com/baeldung/timestamp/StringToTimestampConverterUnitTest.java

package com.baeldung.timestamp;

import org.junit.Assert;
import org.junit.Test;

import java.sql.Timestamp;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;

public class StringToTimestampConverterUnitTest {

    @Test
    public void givenDatePattern_whenParsing_thenTimestampIsCorrect() {
        String pattern = "MMM dd, yyyy HH:mm:ss.SSSSSSSS";
        String timestampAsString = "Nov 12, 2018 13:02:56.12345678";
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern(pattern);
        LocalDateTime localDateTime = LocalDateTime.from(formatter.parse(timestampAsString));

        Timestamp timestamp = Timestamp.valueOf(localDateTime);
        Assert.assertEquals("2018-11-12 13:02:56.12345678", timestamp.toString());
    }
}