• Find duplicate elements in the Stream
    17 October

    Java 8 – Find duplicate elements in Stream

    Introduction When working with a collection of elements in Java, it is very common to have duplicate elements, and Java provides different APIs that we can use to solve the problem. Java 8 Stream provides the functionality to perform aggregate operations on a collection, and one of the operations includes finding duplicate elements. In this […]

  • Format Instant to String in java
    02 May

    How to format Instant to String in java

    Learn about how to format Instant to String in java.

  • Convert Date to LocalDate in java
    12 January

    Java Date to LocalDate

    In this post, we will see how to convert Date to LocalDate in java. Sometimes, we may need to convert Date to new Java 8 APIs and vice versa. There are multiple ways to convert Date to LocalDate in java. Read also: Convert LocalDate to Date in java Using toInstant() method of Date class You […]

  • Convert LocalDate to Date in java
    11 January

    Java LocalDate to Date

    In this post, we will see how to convert LocalDate to Date. Java 8 has introduced a lot of new APIs for Date and time. There can be many ways to convert Java LocalDateTime to date. Using Instant object You can convert LocalDate to Date using Instant object which we can from Zone. Here is […]

  • Convert Stream to List in java
    31 December

    Java Stream to List

    In this post, we will see how to convert Stream to List in java. There are multiple ways to convert Stream to List in java. Using Collectors.toList() You can pass Collectors.toList() to Stream.collect() method to convert Stream to List in java. Stream’s collect method performs mutable reduction operation on elements of Stream and Collectors.toList() provides […]

  • Convert LocalDateTime to Timestamp in java
    18 November

    Convert LocalDateTime to Timestamp in Java

    In this post, we will how to convert LocalDateTime to Timestamp . Before learning how to convert localdatetime to timestamp, let us learn about LocalDateTime and Timestamp, and understand the importance of this conversion. LocalDateTime LocalDateTime was introcuded in Java 8. LocalDateTime can be imported time package: import java.time.LocalDateTime; LocalDateTime is an immutable object used […]

  • 28 August

    A In-Depth guide to Java 8 Stream API

    In this post, we will see an in-depth overview of Java 8 streams with a lot of examples and exercises. Introduction You may think that Stream must be similar to InputStream or OutputStream, but that’s not the case. A Stream represents a sequence of elements supporting sequential and parallel aggregate operations. Stream does not store […]

  • Java Stream List to Map
    26 April

    Java Stream List to Map

    In this post, we will see how to convert List to Map using Stream in java 8. Collectors’s toMap() can be used with stream to convert List to Map in java. Consider a class Named Movie which have 3 fields – id, name and genre [crayon-6172720fc3b6f998921921/] Create a list of movies and convert with to […]

  • Java Stream Sorted
    26 April

    Java Stream sorted example

    In this post, we will see how to sort a list with Stream.sorted() method. Java 8 has introduced Stream.sort() method to sort list of elements conveniently. It helps us to write short and concise functional style code rather than boilerplate code. java.util.Stream has two overloaded versions of sorted() method. sorted(): Returns a stream having elements […]