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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We have already seen how to run Apache Kafka on a Docker container via a docker-compose.yaml file at Apache Kafka example with Java – getting started tutorial. Now let’s look at how easy it is to install Apache Kafka on Mac.
Prerequisite This tutorial assumes that Java 17 is installed.
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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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Step 1: Check if Golang is already installed on Mac.
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~]$ go version |
#1 Installing Golang
Step 2: Install Golang on Mac if not already installed. There are different ways to install, and let’s use HomeBrew.
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~]$ brew install go |
No,
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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 ›...
Step 1: Download latest version of Storm (E.g. apache-storm-1.1.1.tar.gz) from http://storm.apache.org/downloads.html On Cloudera machine it will be downloaded to the folder “/home/cloudera/Downloads”. Step 2: Create a directory named “/opt/storm” and unzip it after moving into that directory.
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bash-4.1$ cd /home/cloudera/Downloads bash-4.1$ sudo mkdir /opt/storm bash-4.1$ sudo mv /home/cloudera/Downloads/apache-storm-1.1.1.tar.gz /opt/storm bash-4.1$ cd /opt/storm bash-4.1$ sudo gunzip apache-storm-1.1.1.tar.gz bash-4.1$ sudo tar -xvf apache-storm-1.1.1.tar |
Step 3: Start the services “Nimbus”, … 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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Step 1: Create a Java Maven project.
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mvn archetype:generate -B -DgroupId=com.mytutorial -DartifactId=simple-jaxb |
Import the “simple-jaxb” folder that has the pom.xml it into eclipse as an “existing maven project”.
Step 2: Modify the “pom.xml” file to look like as shown below.
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These Hadoop tutorials assume that you have installed Cloudera QuickStart, which has the Hadoop eco system like HDFS, Spark, Hive, HBase, YARN, etc.
What is Hadoop & HDFS? Hadoop based data hub architecture & basics | Hadoop eco system basics Q&As style.
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This extends Docker Tutorial – client & server with docker-compose.yml. It assumes that you have a Docker desktop is running in your operating system.
1. Redis Docker compose file without password auth
Here is the docker-compose.yml file created under ~/projects folder.
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