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LAMBDA EXPRESSION:               Lambda expression is the most advanced features of java and it introduced in java 8.It basically instance of the functional interface(which interface contain only one abstract method).In lambda expression,there is only abstract functions are implemented.functional interfaces are implement only one abstract method but it can contain any number of default and static method. Runnable and Comparable are the example of functional interface. STREAM API:            A stream is the sequence of processed data source which supports various operations such as filter, map, reduce, find, match etc.            In-stream the aggregate operations and the bulk operations processing convenient and fast.               Before stream API, for a simple operation like comparing with a string with the element of a string array...

                    In this topic, we discuss, how to set up a new spring boot project and how to run this in the server and how to generate war in command prompt. Here we use STS(Spring tool suite) to build the project. We can also build through Eclipse IDE . For build project, through the eclipse, we need to install external plugins from eclipse market place. We discuss all this in detail but for now, firstly using Spring tool suite let's start building our project. So without wasting any time let's begin. REQUIERMENTS: 1.STS or Eclipse IDE with Spring tools plug-in 2.Jdk -8 or higher 3.Maven 3 or higher STEP BY STEP PROCESS: 1.Open The Spring tool suite: 2.Select a work directory where you want to build your project: 3.Step up the project name: -Set the project name. -Set the packaging as war because we build a web based application. -Set groupId(Group Id is the unique identification o...

WHAT IS QR CODE AND HOW TO GENERATE QR CODE USING JAVA:           QR Code stands for Quick Response Code first design in Japan in 1994. The QR code is the trademark for a type of matrix barcode. The main purpose is to store information and is easily read by the advanced mobile system. The QR code is the two-dimensional bar code which store the piece of information.in the QR code information are encoded in 4 standardized encoding mode (numeric, alphanumeric, byte/binary, and kanji)    to store data efficiently. In Java, we can generate a QR code using zxing API provided by Google .zxing API support 4000 characters to encode. So without wasting any time let begin with an example for a better preference. PROJECT STRUCTURE: MAVEN DEPENDENCIES:        Put the dependencies on pom.xml pom.xml: <!-- https://mvnrepository.com/artifact/com.google.zxing/core --> ...

                  In this topic, we discuss mail protocol and how to send email using mail library and how can we sent an email with more dynamic and with some more graphical interface and it's really looking good than the traditional email content. Here we use FTL to make email a more graphical experience. We try to show the example of this topic as possible as an easy way. so without wasting any time let's start the topic. WHAT IS FTL AND WHAT'S THE BENEFITS?          FTL(Free marker template) is a Java-based template language which is used to make the more dynamic and graphical experience on screen. FTL discovered by Apache foundation. It focuses on java based dynamic template design. Free marker template file extension is .ftl which is approx. as same as HTML code but the major difference is, we can send the data from Java source classes to show dynamic content. It's the main focus on MVC architec...

WHAT IS A SCHEDULER?       Firstly know about what is scheduling. Scheduling is a process that executing a task in a certain time period. A scheduler is a tool, the main objective is to implement the scheduling process. Mainly scheduler is used to perform the batch task for the repeated manner and perform the action of task without any outer other events. IMPLEMENTATION OF SCHEDULER IN SPRING BOOT:        In spring boot we can implement scheduler in multiple ways but here we use the annotation to implement the scheduler. In spring boot we can implement scheduler using @Scheduled annotation. The @Scheduled annotation internally uses the TaskScheduler interface to schedule a task. To enable the @Scheduled annotation we must use @EnableScheduling annotation in the Configuration file.        Let's start with an example of task scheduler. Her we use STS(spring tool suite) to build the spring boot project. First, b...