This assumes that you have read the spring batch beginner tutorial & industrial strength part 1. This is the final part. Step 1: The annotated Java classes are referenced directly due to following line in the batch-context.xml
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<!-- Component-Scan automatically detects annotations in the Java classes. --> <context:component-scan base-package="com.myapp.batch" /> |
Step 2: You define the batch job as shown below. … Read...
Q1. What is the key benefit of using Spring boot?
A1. The key benefit is that you can “build a production ready application from scratch in a matter of minutes”.
Over the years since its inception, Spring has grown to be very complex in terms of the amount of configuration an application requires.
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Step by step MySQL video tutorial to get started with MySQL database. Any decent self-taught projects require a database to store & retrieve data.
Related Links
1. Getting started with MySQL database beginner tutorial.
SQL Interview Q&As
1. 14 FAQ SQL Interview Questions &
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Q1. What is Spring Cloud? A1. Spring Boot is widely used to develop MicroServices. As many organisations deploy these services on the cloud like AWS, etc you need to take care of various aspects to make it cloud native, hence Spring Cloud was created. … Read more ›...
Q1 How do you remove the Control-M characters from a file?
A1 Control-M is a carriage return on keyboard. The ^M is the keyboard equivalent to \r. In a file originated from DOS/Windows the \r\n is used for an end of line carriage return, whereas in Unix it is \n for a new line.
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Docker, Jenkins, CI/CD, & DEV/OPS have been the buzz words for the last several years. You will be seeing this in more often in the job requirements as well. 21 Docker interview questions & answers | DevOps & CI/CD Interview Q&As
Pre-requisite: Docker is installed on your machine for example:
Mac OS X
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$ brew cask install docker |
Linux systems
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# install newest version curl -fsSL https://get.docker.com | bash # add current user to docker group so that it can execute docker commands sudo usermod -aG docker $USER # Start docker sudo systemctl start docker |
Windows10
Step 1: Create a folder “
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Drools is an open source rules engine that allows you to externalize the business rules.
This tutorial assumes that you have gone through “Setting up Java, Maven, and Eclipse.” Once you have gone through the following steps, you should have a project structure as shown below.
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Prerequisite This tutorial assumes that Java 8 is installed. You check this with
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$ java -version |
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openjdk version "1.8.0_202" OpenJDK Runtime Environment (AdoptOpenJDK)(build 1.8.0_202-b08) OpenJDK 64-Bit Server VM (AdoptOpenJDK)(build 25.202-b08, mixed mode) |
If Java is not installed, you can install it on Mac with:
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$ brew tap AdoptOpenJDK/openjdk $ brew cask install adoptopenjdk8 |
Note: If you are using windows,
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Step 1: Create an amazon.com account via Amazon.com.
Step 2: Create an aws.amazon.com account. You need to provide credit/debit card details even if you want to use the free tier for up to 12 months. It is advisable to use a credit/debit card with low limits (E.g.
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Jenkins is the most popular CI/CD server. There you create jobs that are triggered by some events (changed in a code repository, manually, etc). Those events invokes the steps like compiling to see if you can generate the executable. Then you run tests (unit tests) to confirm the desired behaviour at low-level.
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Prerequisite
Uses Java 17 with Maven 3, and ensure they are installed and in the path. For example in mac, the ~/.bash_profile should have:
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... export JAVA_HOME="$(/usr/libexec/java_home -v 17)" export M3_HOME=/Users/ak/tools/apache-maven-3.9.4 ... export PATH=$SPARK_HOME/bin:$JAVA_HOME/bin:$M3_HOME/bin:${PATH} ..... |
and source it.
1. Create an empty Maven project
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C:\Temp\Java\projects>mvn archetype:generate -DgroupId=com.mytutorial -DartifactId=simple-grpc |
and import or open into an IDE of your choice.
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Learn Docker first. Getting started with Docker. Learn the Kubernetes basics at Kubernetes & Docker interview Questions & Answers Pre-requisites: brew is installed: Homebrew
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$ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" |
Homebrew Cask
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$ brew tap caskroom/cask |
Docker Download and install Docker for Mac. … Read more ›...
JasperReports is a popular reporting framework/tool to produce reports in PDF, XLS, etc.
Step 1: Define a Person.java POJO class as defined below. This is the Java bean data source that is going to provide the data to the report.
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package com.mycompany.app.jasper; public class Person { private String firstName; private String surname; private Integer age; public String getFirstName() { return firstName; } public void setFirstName(String firstName) { this.firstName = firstName; } public String getSurname() { return surname; } public void setSurname(String surname) { this.surname = surname; } public Integer getAge() { return age; } public void setAge(Integer age) { this.age = age; } @Override public String toString() { return "Person [firstName=" + firstName + ", surname=" + surname + ", age=" + age + "]"; } } |
Step 2: Download Jaspersoft iReport 5.0.0,
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