Conversion

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 […]

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 […]

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 […]

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-6008355c7de91118700635/] Create a list of movies and convert with to […]

In this post, we will see how to convert long to String in java. There are lot of ways to convert long to String.Let’s see each one by one. Using Long.toString() You can use Long class toString() method to convert long to String. [crayon-6008355c7e076666355282/] In case, Long can be null and you don’t want to […]

In this post, we will see how to convert LocalDateTime 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 LocalDateTime to date using Instant object which we can from ZonedDateTime. Here is […]

In this post, we will learn java array to set conversion. There are many ways to convert array to set. 1. Using Java 8’s Stream If you are using Java 8, I would recommend using this method. [crayon-6008355c7e2fa157458032/] Output [John, Martin, Mary] 2. Using HashSet constructor() We can directly call HashSet‘s constructor for java set […]

In this post, we will learn java set to array conversion. There are many ways to convert set to an array. 1. Using Java 8’s Stream If you are using Java 8, I would recommend using this method. [crayon-6008355c7e3d2312735066/] Output [John, Martin, Mary] 2. Using toArray() We can directly call toArray method on set object […]

In this post, we will see how to convert Java Collection to List. There are many ways to do it, we will see two ways here. Using ArrayList constructor [crayon-6008355c7e4cb920066011/] Above ArrayList‘s constructor creates a list having the elements of the specified collection, in the order they are returned by the collection’s iterator. Using Java […]