Introduction

Tipps and Tricks

Change App Port Number

Add line to file src/main/resources/application.properties

server.port=9010

Rest Api

Get JSON Data from a remote Rest Server

final RestTemplate restTemplate = new RestTemplate();
final String response = restTemplate.getForObject("https://httpbin.org/ip", String.class);

System.out.println(response);

Introduction

Keycloak – Open Source Identity and Access Management for Modern Applications and Services

Installation

Java

Using AdoptOpenJDK8

brew info adoptopenjdk8

Eclipse

Keycloak

WildFly

See Also

• Awesome Keycloak

Troubleshooting

Change Server Port

By default, executing standalone.sh (for Linux) / standalone.bat (for Windows) makes the server available at following urls:

https://localhost:8443/auth/
http://localhost:8080/auth/

If we need to run multiple instance of server at different ports, run the following command:

For Linux:

standalone.sh -Djboss.socket.binding.port-offset=100

For Windows:

standalone.bat -Djboss.socket.binding.port-offset=100

The above commands will add the offset of 100 to the defaults ports available for Keycloak server.

For example, previously the ports where 8443 and 8000. Now the new ports become 8443 + 100 = 8543 and 8080 + 100 = 8180.

References:

https://www.keycloak.org/docs/3.2/getting_started/topics/secure-jboss-app/before.html

Location of Server Logfile

\standalone\log

Additional Readings

• https://codehumsafar.wordpress.com/category/keycloak/

Introduction

Spring makes programming Java quicker, easier, and safer for everybody. Spring’s focus on speed, simplicity, and productivity has made it the world’s most popular Java framework.

Required Software

Java

Spring recommend AdoptOpenJDK version 8 or version 11.

Oracle AdoptOpenJDK OpenJDK

Eclipse

Eclipse IDE for Enterprise Java Developers

Sprint Tools | 4

Spring Tools 4 for Eclipse

Create a new App from CLI

Create a starter app using spring.io from the commandline

$ curl https://start.spring.io/starter.zip -d language=java -d dependencies=web,mustache,jpa,h2,devtools -d packageName=com.example.blog -d name=Blog -o blog.zip

Working with Maven

Tipps and Tricks

Change App Port Number

Add line to file src/main/resources/application.properties

server.port=9010

Learning Path

Start with the following tutorials / guides:

• Spring Quickstart Guide
• Building a RESTful Web Service
• Consuming a RESTful Web Service
• Accessing Data with JPA

See Also

• Building a RESTful Web Service
• Consuming a RESTful Web Service
• Consuming a RESTful Web Service with AngularJS
• Consuming a RESTful Web Service with jQuery
• Consuming a RESTful Web Service with rest.js
• Accessing GemFire Data with REST
• Accessing MongoDB Data with REST
• Accessing data with MySQL
• Accessing JPA Data with REST
• Accessing Neo4j Data with REST
• Securing a Web Application
• Building an Application with Spring Boot

• Building REST services with Spring
• React.js and Spring Data REST

• Creating API Documentation with Restdocs
• Enabling Cross Origin Requests for a RESTful Web Service
• Building a Hypermedia-Driven RESTful Web Service
• Circuit Breaker

• Portfolio
• Python Pandas / Numpy /SciPy
• Apache Spark
• Apache Hadoop

Learning

• https://www.coursera.org/learn/python-data-analysis/home/welcome
• Introduction to Data Science in Python
• https://www.coursera.org/learn/python-machine-learning/home/welcome
• https://www.coursera.org/learn/progfun1/home/welcome
• https://www.coursera.org/learn/hadoop/home/welcome
• https://www.coursera.org/learn/machine-learning/home/welcome
• https://www.coursera.org/learn/hadoop/home/welcome
• https://www.coursera.org/learn/python-text-mining/home/welcome
• https://www.coursera.org/learn/scala-spark-big-data/home/welcome
• https://www.coursera.org/learn/python-plotting/home/welcome
• https://www.coursera.org/learn/datasciencemathskills/home/welcome
• https://www.coursera.org/learn/data-analysis-tools/home/welcome
• https://www.coursera.org/learn/data-visualization/home/welcome
• https://www.coursera.org/learn/big-data-introduction/home/welcome
• https://www.coursera.org/learn/big-data-machine-learning/home/welcome

Mathematics for Data Science

Linear Algebra

1. Khan Academy Linear Algebra series (beginner friendly).
2. Coding the Matrix course (and book).
3. 3Blue1Brown Linear Algebra series.
4. fast.ai Linear Algebra for coders course, highly related to modern ML workflow.
5. First course in Coursera Mathematics for Machine Learning specialization.
6. “Introduction to Applied Linear Algebra — Vectors, Matrices, and Least Squares” book.
7. MIT Linear Algebra course, highly comprehensive.
8. Stanford CS229 Linear Algebra review.

Calculus

1. Khan Academy Calculus series (beginner friendly).
2. 3Blue1Brown Calculus series.
3. Second course in Coursera Mathematics for Machine Learning specialization.
4. The Matrix Calculus You Need For Deep Learning paper.
5. MIT Single Variable Calculus.
6. MIT Multivariable Calculus.
7. Stanford CS224n Differential Calculus review.

Statistics and Probability

1. Khan Academy Statistics and probability series (beginner friendly).
2. A visual introduction to probability and statistics, Seeing Theory.
3. Intro to Descriptive Statistics from Udacity.
4. Intro to Inferential Statistics from Udacity.
5. Statistics with R Specialization from Coursera.
6. Stanford CS229 Probability Theory review.

Bonus materials

1. Part one of Deep Learning book.
2. CMU Math Background for ML course.
3. The Math of Intelligence playlist by Siraj Raval.

Starting with Angular

Links

Apps

https://github.com/sevilayha/angular-first-site-test/blob/master/src/app/core/services/user.service.ts

Tutorials

https://angular.io/tutorial

https://angular-templates.io/tutorials/about/learn-angular-from-scratch-step-by-step

https://www.techiediaries.com/angular-tutorial-basics/

https://angular.de/artikel/angular-tutorial-deutsch/

https://tutorialzine.com/2016/09/30-learning-resources-for-mastering-angular-2

Building a Website

How I Built A Simple Website In Angular Using Bootstrap-Jumbotron

How To Build Responsive Layouts With Bootstrap 4 and Angular 6

https://medium.com/@hamedbaatour/build-a-real-world-beautiful-web-app-with-angular-6-a-to-z-ultimate-guide-2018-part-i-e121dd1d55e
https://www.creativebloq.com/how-to/how-to-build-a-full-page-website-in-angular
https://www.airpair.com/angularjs/building-angularjs-app-tutorial

Templates: Website

https://startbootstrap.com/previews/modern-business/
https://html5boilerplate.com/ or on Github