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Jakarta Mail (formerly JavaMail) is a Jakarta EE API used to send and receive email via SMTP, POP3 and IMAP.Jakarta Mail is built into the Jakarta EE platform, but also provides an optional package for use in Java SE.
Java provides java.util.Date, a mutable reference type with millisecond precision, and (since Java 8) the java.time package (including classes such as LocalDate, LocalTime, and LocalDateTime for date-only, time-only, and date-and-time values), a set of immutable reference types with nanosecond precision. [24]
Real-time Java is a catch-all term for a combination of technologies that enables programmers to write programs that meet the demands of real-time systems in the Java programming language. Java's sophisticated memory management , native support for threading and concurrency, type safety , and relative simplicity have created a demand for its ...
Unlike Javadoc tags, Java annotations can also be embedded in and read from Java class files generated by the Java compiler. This allows annotations to be retained by the Java virtual machine at run-time and read via reflection. [2] It is possible to create meta-annotations out of the existing ones in Java. [3]