java.time.LocalDateTime - Local Date and time without Timezone

This section describes the java.time.LocalDateTime class that represents a local time in an unspecified timezone expressed in 2 components, ISO 8601 date and time of day.

java.time.LocalDateTime is a class of the Date-Time API introduced in JDK 1.8 that represent a local date and time without knowing the timezone or UTC offset. A java.time.LocalDateTime object does not represent any specific moment of the absolute time. For example, a java.time.LocalDateTime object with a value of "2014-11-28T05:00:00.000" represents the Walmart store opening local time for the Black Friday sale in 2014. "2014-11-28T05:00:00.000" means different times if you travel to difference places outside the local timezone.

The date and time value stored in a java.time.LocalDateTime object has 2 components:

Since a LocalDateTime object does not represent a time with full date and time components, it can also be called as a partial date time object.

The java.time.LocalDateTime class is designed mainly for manipulating local times without any specific timezone to support local daily activities, like celebrating New Year Eve at Dec 31, 23:59:59.000 local time. Its operations respects ISO 8601 calendar only.

Main methods offered on the java.time.Instant class are:

Table of Contents

 About This JDK Tutorial Book

 JDK (Java Development Kit)

Java Date-Time API

 What Is Date-Time API

 java.time.Instant - Representing a Moment of Time

 java.time.Instant Usage Examples

 java.time.Instant - get(INSTANT_SECONDS) Error

 Converting java.util.Date to java.time.Instant

 java.time.ZonedDateTime - Calendar and Timezone

 java.time.ZonedDateTime Usage Examples

 Converting java.util.GregorianCalendar to java.time.ZonedDateTime

 java.time.OffsetDateTime - Calendar and UTC Offset

 java.time.OffsetDateTime Usage Examples

java.time.LocalDateTime - Local Date and time without Timezone

 Partial Date and Time Objects and Classes

 java.time.format.DateTimeFormatter - Date-Time Strings

 java.time.Duration - Time Durations

 java.time.Duration Usage Examples

 java.time.Period - Periods in Days and Months

 java.time.Period Usage Examples

 Date, Time and Calendar Classes

 Date and Time Object and String Conversion

 Number Object and Numeric String Conversion

 Locales, Localization Methods and Resource Bundles

 Calling and Importing Classes Defined in Unnamed Packages

 HashSet, Vector, HashMap and Collection Classes

 Character Set Encoding Classes and Methods

 Character Set Encoding Maps

 Encoding Conversion Programs for Encoded Text Files

 Java Logging

 Socket Network Communication

 Datagram Network Communication

 DOM (Document Object Model) - API for XML Files

 SAX (Simple API for XML)

 DTD (Document Type Definition) - XML Validation

 XSD (XML Schema Definition) - XML Validation

 XSL (Extensible Stylesheet Language)

 Message Digest Algorithm Implementations in JDK

 Private key and Public Key Pair Generation

 PKCS#8/X.509 Private/Public Encoding Standards

 Digital Signature Algorithm and Sample Program

 "keytool" Commands and "keystore" Files

 KeyStore and Certificate Classes

 Secret Key Generation and Management

 Cipher - Encryption and Decryption

 The SSL (Secure Socket Layer) Protocol

 SSL Socket Communication Testing Programs

 SSL Client Authentication

 HTTPS (Hypertext Transfer Protocol Secure)

 Outdated Tutorials


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