JDK Tutorials - Herong's Tutorial Examples - v6.32, by Herong Yang
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
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
Encoding Conversion Programs for Encoded Text Files
Datagram Network Communication
DOM (Document Object Model) - API for XML Files
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