What is dependency injection and what are the advantages and ways to doing it in spring framework.

map vs flatmap java 8 basic understanding

map is intermediate operation provided by stream API which takes function as argument…

why to use functional programming in java? object oriented vs functional programming in java ?

default and static methods in java are actually interface evolution in java 8 how?

reduce in java 8 streams basic understanding.

Using reduce, stream is reduces to a value, in functional paradigm it’s also…

understanding functional interface, thinking the functional way java 8.

lambda expressions & functional interfaces in java 8 explained.

Q. What is lambda expressions ?
In functional programming paradigm, lambdas are functions without names. 
Lambda expressions follows “data as a code” philosophy where data itself is code to some other data. eg. functions…

Understanding streams in java 8

Streams are JAVA API which helps manipulating collections of data in a declarative way (you express a…

sort using comparators in java 8

comparator is powerful technique to implement custom sort in java.
Before java 8 usual way was to use…

What is an interface and what are the advantages of making use of them in Java?