java 8 | Byte Padding

Java 8: convert List into Map

By
on Mar 15, 2017
in Java, Java Core

Suppose we have a List of objects and want to convert into Map.

Java 8 – flatmap to find a pair of elements from two List

By
on Mar 14, 2017
in Java Core

Today we will see how using java 8 stream flatmap method we can wind all the pairs from two Lists.

Java 8 – get all unique characters from List of string using flatmap

By
on Mar 14, 2017
in Java Core

Let’s see how we can get all the unique characters from List of Strings.

Java 8 Default Method Example

By Konstantin Lalafaryan
on Mar 14, 2017
in Java, Java Core

Let’s understand why we need default methods which have been added in Java 8. Assume that we have an Interface with some abstract methods and it has many implementation classes. Now if we want to add new method in the Interface it means we need to change all implementations. Continue Reading

Java 8 streams – How to remove duplicate elements from array

By
on Mar 11, 2017
in Java Core

Let’s see how we can remove duplicate elements from array using.

java 8 – CompletableFuture completeExceptionally example

By
on Mar 09, 2017
in Java Core

Let’s see what happens when async calls exception is raised and how we can handle this situation.

Parallel stream and CompletableFuture example

By
on Mar 05, 2017
in Java Core

Let’s see how we can paralellize java application. Suppose we have asked to develop application where given the libraries list we need to calculate the number of books in each library. Suppose calculation is an expensive operation. The first thing that comes to our mind is to do this by streams.

How java 8 default method ambiguity solved

By
on Feb 18, 2017
in Java Core

Default methods are introduced in Java 8. The main purpose of default method is to make possible evolving an existing API in compatible way. Interfaces can contain method implementation for which implementing class doesn’t need to provide implementation.