#Java 8 how to
#Java 8 code
#Java 8 series

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#Java 8 code

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Why do we need a new date and time library?.

#Java 8 how to

How to read file in Java вЂ“ BufferedReader.

Java вЂ“ Convert comma-separated String to a List.

Java вЂ“ How to join List String with commas.

Java вЂ“ How to check if a String is numeric.

Java вЂ“ How to get keys and values from Map.

Java вЂ“ How to search a string in a List?.

Java вЂ“ Generate random integers in a range.

Java вЂ“ Check if Array contains a certain value?.

Java 8 вЂ“ HijrahDate, How to calculate the Ramadan date (Islamic calendar).

Java 8 вЂ“ MinguoDate examples (Taiwan calendar).

Check if the date is older than 6 months.

Java вЂ“ How to change date format in a String.

Java 8 вЂ“ Convert LocalDateTime to Timestamp.

Java вЂ“ Display all ZoneId and its UTC offset.

Java 8 вЂ“ Convert ZonedDateTime to Timestamp.

Java 8 вЂ“ Unable to obtain LocalDateTime from TemporalAccessor.

Java 8 вЂ“ Convert LocalDate and LocalDateTime to Date.

Java 8 вЂ“ How to parse date with 'dd MMM' (02 Jan), without year?.

Java 8 вЂ“ How to calculate days between two dates?.

Java 8 вЂ“ Difference between two LocalDate or LocalDateTime.

Java 8 вЂ“ Convert Epoch time milliseconds to LocalDate or LocalDateTime.

Java вЂ“ Convert date and time between timezone.Java 8 вЂ“ Convert Date to LocalDate and LocalDateTime.Java 8 вЂ“ Convert Instant to ZoneDateTime.Java 8 вЂ“ Convert Instant to LocalDateTime.Java 8 вЂ“ How to convert String to LocalDate.вЂ“ Measures time in years, months and days.вЂ“ Measures time in seconds and nanoseconds.вЂ“ date and time for machine, seconds passed since the Unix epoch time (midnight of JanuUTC).вЂ“ formatting (date -> text), parsing (text -> date) for java.time.

#Java 8 series

Java 8 created a series of new date and time APIs in java.time package. вЂ“ formatting (date -> text), parsing (text -> date) for date and calendar.вЂ“ date and time, more methods to manipulate date.вЂ“ date and time, print with default time-zone.In the old days, we use Date and Calendar APIs to represent and manipulate date. Java вЂ“ Stream has already been operated upon or closed.Java вЂ“ How to convert a primitive Array to List.Java вЂ“ How to sum all the stream integers.Java 8 How to sort list with stream.sorted().Java 8 How to convert IntStream to int or int array.Java 8 How to convert IntStream to Integer array.Java 8 Should we close the Stream after use?.Java 8 Stream вЂ“ The peek() is not working with count()?.Java 8 Stream вЂ“ Read a file line by line.Java 8 How to Sum BigDecimal using Stream?.Java 8 Stream findFirst() and findAny().Java 8 Filter a null value from a Stream.Java 8 Stream Collectors groupingBy examples.With method reference, it gains better readability. System.out::println, Error::printStackTraceД«oth lambda expression or method reference does nothing but just another way call to an existing method. Let us see the six basic function interfaces. The compiler will treat any interfaces meeting the definition of a functional interface as a functional interface it means the annotation is optional. Java 8 introduced an interface that has exactly one abstract method. Java 8 method references, double colon (::) operator.A series of Java 8 tips and examples, hope you like it.