philippabele / java-masterclass Goto Github PK

Java 98.57% Dockerfile 1.43%

java-masterclass's Introduction

Start learning java inside a docker container

Build a docker image from the provided Dockerfile. You have to replace the tokens <REPLACE-ME> with your credentials and your API-Token:

docker build --build-arg GH_TOKEN=<REPLACE-ME> --build-arg username=<REPLACE-ME> --build-arg email=<REPLACE-ME> -t java-masterclass .

The next step is to create the private and public gpg key

gpg --full-generate-key

Afterwards you are prompted to specify details for the key. Here you can accept the defaults with the exception of the key size. Enter a key size of 4096. Finally you have to specify your userid information and assign a password. Use the following command to list the long form of the keys.

gpg --list-secret-keys --keyid-format=long

Copy the key ID, in this case: 3AA5C34371567BD2

Enter this text with your copied ID. Your key will be printed to console.

gpg --armor --export <id>

Copy the printed key, beginning with BEGIN PGP PUBLIC KEY BLOCK and ending with END PGP PUBLIC KEY BLOCK.

Now you are able to add the key to your GitHub Account: https://github.com/settings/gpg/new

java-masterclass's People

Contributors

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java-masterclass's Issues

Section 9 ex 42 Arrays Challenge

Section 12 Generics Challenge

Control Flow Exercise 17 & 18

Section 10 Exercise 46 LinkedList

Control Flow Exercise 25 & 26

OOP Inheritance Exercise 32 & 33

Section 11 Interface Challenge

Section 14 Java Collections Exercise 42 Adventure Game

Set Up Maven with JDK 17

in order to run jdk 17 with maven you need compatible versions

add instructions based on this post from digitalocean to the dockerfile

Step 1: Download the Maven Binaries

wget https://dlcdn.apache.org/maven/maven-3/3.8.6/binaries/apache-maven-3.8.6-bin.tar.gz
tar -xvf apache-maven-3.8.6-bin.tar.gz
mv apache-maven-3.8.6 /opt/

Step 2: Setting M2_HOME and Path Variables

M2_HOME='/opt/apache-maven-3.8.6'
PATH="$M2_HOME/bin:$PATH"
export PATH

Step 3: Verify the Maven installation

mvn -version

OOP Inheritance Exercise 34 & 35

Section 14 Java Collections Exercise 44 Sets

Add kubectl with autocompletion to Dockerfile

https://kubernetes.io/docs/tasks/tools/install-kubectl-linux/#install-using-native-package-management

https://kubernetes.io/docs/tasks/tools/install-kubectl-linux/#enable-shell-autocompletion

Control Flow Exercise 19 & 20

Section 9 ex 43 Minimum Element Challenge

add kaliases to Dockerfile

https://github.com/ahmetb/kubectl-aliases

Section 11 Abstract Class Challenge

OOP Ex 41 Bills Burger

OOP Inheritance Exercise 36 & 37

Control Flow Exercise 21 & 22

Add Dockerfile and Init sh for dev container

take a look at https://k9scli.io/

https://k9scli.io/

OOP Ex 39 Encapsulation

Control Flow Exercise 28 & 29

OOP Inheritance Exercise 30 & 31

Docker Exit Status (127)

There is an error in the logs of the container

bash: $'\342\200\231export': command not found

root@497ac6d8179b:/java-masterclass# exit

Manage access to different k8s cluster

May this helps for minikube

Extract the Cluster Certificate Authorithy

$ kubectl config view --minify --raw --output 'jsonpath={..cluster.certificate-authority-data}' | base64 -d | openssl x509 -text -out -
...

Extract the Client Certificate

$kubectl config view --minify --raw --output 'jsonpath={..user.client-certificate-data}' | base64 -d | openssl x509 -text -out -
...

Extract the Client Private Key

$ kubectl config view --minify --raw --output 'jsonpath={..user.client-key-data}' | base64 -d
...

For Windows user

choco install base64
choco install openssl

How to handle several cluster?

Add Exercise 11 and 12

Control Flow Exercise 23 & 24

OOP Ex 40 Polymorphism

Control Flow: Add Exercise 15 and 16

Section 10 Exercise 48 AutoUnboxing

Section 5 Exercise 7 and 8

add zsh and ohmyzsh to dockerfile

apt install zsh

curl form ohmyzsh website

test and config to another theme

OOP Exercise 38 composition

take a look at https://starship.rs/

https://starship.rs/

Add Exercise 9 and 10

Section 9 ex 44 Reverse Array Challenge

Add kubens + kubectx to Dockerfile

see https://github.com/ahmetb/kubectx for installation

Section 14 Java Collections Exercise 43 Immutable Class

Update Readme

This README about this Java Masterclass Project gives you an overview of the project, instructions for setting up and using the project, and any other relevant information.

Overview

This project contains solutions to the coding challenges of Tim Buchalka's Java Masterclass on Udemy. This course is ideal for beginners and experienced programmers who want to learn or refresh their fundamental Java knowledge, which was recently updated to Java 17. It covers the following Java topics:

Expressions and statements
Control flow
Object-oriented programming with inheritance and polymorphism
Arrays
Lists, ArrayLists, LinkedLists, Iterators, Autoboxing
Inner and abstract classes, as well as interfaces
Java Generics
Packages, static and final keywords
Java Collections
JavaFX
Basic input and output, including java.util
Concurrency
Lambda expressions
Regular expressions
Debugging and unit testing
Databases
Network programming
Java 9 Module System

Installation

Feel free to support your own java journey with the solutions of this project. This project provides a dockerfile which contains a ready to use java environment. Just run the dockerfile and connect to the running container with VS Code.

Usage

The solutions are organized within packages and classes in the src folder of this project. The coding challenges are described within the classes itself or in markdown files named task.md within the packages.

Contributing

to contribute to the project, in order to report bugs or request additional solutions of coding challenges, feel free to open issues. if you would like to contribe with bug fixes or your own solution to challenges open a pull request and we will review your changes.

install vs code server during docker build
install vs code extensions during docker build

code --install-extension ms-vscode.cpptools