Java Multikey map example
1. Overview This article is about how to java multikey map with example. Java Map has a key value pair where the key must be a unique Object which used…
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Java Generate UUID
1. Overview In this article, We will discuss how to generate UUID in Java. We will also discuss different ways to generate random UUID, Time-based UUID, and Name-based UUID. Full…
Java sort using Comparator example
Overview In Java 8, some new comparison utility methods are added in the Comparator interface which returns the behavior of Comparator. those methods can be used with lambda expression or…
Java Stream of Multiple Lists
Overview In Java 8, we know how to get a stream of List using stream() or parrallelStream() method of Collection interface. But what if we want a stream of two…
Java stream filter null values
Overview Java List and Map may contain null values (elements) and sometimes we need to filter those null elements to avoid NullPointerException before going to process it using stream API….
Flyway Repeatable Migration Example
1. Overview In this article, We will learn how we can configure repeatable migration in the flyway database migration tool with an example. So many times it needs for us…
Java Base64 encode decode example
1. Overview In this example, We will learn Java Base64 encode decode example. Base64 is very popular for two way encoding and decoding of data. Here we have given an example…
Java Convert double to byte array
1. Overview In this article we will discuss various techniques of converting double to byte array and vice versa,double array to byte array and so on.In java double data type…
Java Convert long to byte array
1. Overview In this article we will discuss various techniques of converting long to byte array and vice versa,long array to byte array and so on.In java long data type…
Java remove multiple objects from ArrayList
1. Overview In this article, We will learn Java remove multiple objects from ArrayList. Java collection is one of the handy features that attract developers. Collection framework makes developers life easy…