Java Spring Boot MVC

mv application.properties application.yml
spring:
profiles:dev
server:
port:81
---
spring:
profiles:prod
server:
port:80

mvn clean package
java -jar -Dspring.profiles.active=dev target/initial-boot-app-0.0.1-SNAPSHOT.jar

Actuator:
https://www.linkedin.com/learning/spring-boot-essential-training/spring-boot-actuator
localhost:8080/env
/health
/mappings

/health
/metrics
/configprops
/env
/loggers
/mappings



Spring Security
https://www.linkedin.com/learning/spring-boot-essential-training/implementing-spring-security

spring.thymeleaf.cache=false

Java Stream API

Processing Data with Java SE 8 Streams, Part 1
https://www.oracle.com/technical-resources/articles/java/ma14-java-se-8-streams.html  

Part 2: Processing Data with Java SE 8 Streams
https://www.oracle.com/technical-resources/articles/java/architect-streams-pt2.html

Package java.util.stream 
https://docs.oracle.com/javase/8/docs/api/java/util/stream/package-summary.html

Interface Stream
https://docs.oracle.com/javase/8/docs/api/?java/util/stream/Stream.html

https://www.youtube.com/watch?v=t1-YZ6bF-g0
Intermediate operations:
filter
map
flatmap
sort (sorted?)
anyMatch
distinct
findFirst

skip

Terminal operations:
forEach
collect
reduce
count
min
max
summaryStatistics


Stream API,part 1 https://www.youtube.com/watch?v=O8oN4KSZEXE
 Intermediate operations:
filter
map
flatmap
peek
sorted
distinct
limit
skip

unordered
parallel
sequential

Terminal operations:
forEach, iterator
find[First|All]
[all|any|non]Match
reduction, collectors

Stream API,part 2 https://www.youtube.com/watch?v=i0Jr2l3jrDA

Java Spring Boot Tips

@PropertySource("classpath/application.properties") @Value("${app_props_key}") private String app_prop_val; https://www.linkedin.com/learning/spring-framework-in-depth/implement-aop-advice-before loggin.level.root=INFO logMethodCall() LOGGER.log(app method params

Java learn & certification

https://docs.oracle.com/javase/tutorial/extra/certification/index.html https://coderanch.com/c/certification 13 Free Java 8 Certification Online Mock Tests https://www.java67.com/2017/05/10-free-java-8-certification-sample-questions-OCAJP8-OCPJP8-Mock-Exams.html https://www.udemy.com/course/spring-boot-complete-guide-from-development-to-deployment/?LSNPUBID=JVFxdTr9V80&ranEAID=JVFxdTr9V80&ranMID=39197&ranSiteID=JVFxdTr9V80-s9R8rW3unDigzKT4CYcaOA https://javarevisited.blogspot.com/2016/12/5-tips-to-prepare-for-oracle-java-certifications-OCAJP-OCPJP-exams.html?m=1 https://dou.ua/lenta/articles/java-11-developer-1/

Java stuff

JSON viewer:
http://jsonviewer.stack.hu/
Parse JSON String to Object in Spring Boot App


Automation JS frameworks
https://dou.ua/lenta/articles/automation-js-frameworks/?from=nl&utm_source=20191022&utm_medium=email&utm_campaign=CM

SCRUM
http://scrumy.com

User Interface with Boostrap Learning Module Overview

BufferedReader, InputStream, BufferedInputStream: Overview

Use BufferedReader, BufferedInputStream in Java

HTML View to Controller to Service to DAO

HTML View to Controller to Service to DAO
Thymeleaf th:each and Boostrap list-group integrated

JUnit
Test Driven Design/BDD with Spring Boot Example
Test Driven Development with Spring Boot

Mockito 
Use Mockito in Spring Boot to Mock Test Object

Spring Boot essentials
https://www.youtube.com/playlist?list=PL73qvSDlAVVh4QHMkO2gM52deldy64n45
From Zero to Hero with Spring Boot - Brian Clozel

https://linuxize.com/post/install-mariadb-on-centos-7/

AMQP: Asynchronous messaging in Spring Boot applications 
https://www.linkedin.com/learning/spring-boot-essential-training/asynchronous-messaging-in-spring-boot-applications

  Spring Data in Spring Boot applications 

https://www.linkedin.com/learning/spring-boot-essential-training/spring-data-in-spring-boot-applications 

  Spring Security in Spring Boot applications 

https://www.linkedin.com/learning/spring-boot-essential-training/spring-security-in-spring-boot-applications

Java PWM monitor

How to Compile Java Programs into EXEs
https://www.youtube.com/watch?v=Mr_TdPuF-4g

How to use ADC in STM32F103C8 - Measuring Analog Voltage
https://circuitdigest.com/microcontroller-projects/how-to-use-adc-in-stm32f103c8-stm32-blue-pill-board

Programming STM32F103C8 Board using USB Port
https://circuitdigest.com/microcontroller-projects/programming-stm32f103c8-board-using-usb-port

5 inches and 6 inches propellers test

https://www.minimumrc.com/products/minimoa-glider-gull-wing-700mm-micro-rc-aircraft-kit?VariantsId=10376

Автополив

Cистема автономного полива (двухканальный планировщик с допустимой нагрузкой до 500мА, при необходимости можно подключить реле постоянного тока для более мощной нагрузки)

Характеристики:
- от 1 до 4 точек полива (теоретически можно больше, но тогда труднее балансировать плечи насоса по нагрузке), или до восьми точек полива со вторым насосом
- индикация разряда аккумулятора (светодиод мигает 3 раза), -
 кнопочная настройка интервала полива (в часах, макс 24) и длительности полива (в секундах, макс 24).
- до 2х недель автономной работы （в зависимости от нагрузки）на аккумуляторе емкостью 2800мА/ч

Демонстрация работы (пример настройки расписания полива):

ATmega2560 vs STM32F407

	STM32F407VGT6		ATmega2560
Price	$11		$9.1
Core	168 MHz		16MHz
Memories	Up to 1 Mbyte of Flash memory •Up to 192+4 Kbytes of SRAM		Program Memory Size (KB)256 SRAM Bytes 8,192 Data EEPROM/HEF (bytes) 4096
Clock, reset and supply management
Timers			2 x 8-bit, 4 x 16-bit
Communications interfaces			4-UART, 5-SPI, 1-I2C
Analog to digital converter (ADC)
I/Os			4 Input Capture, 4 CCP, 16PWM

Atmega328 vs STM32F103

	STM32F103C8T6		ATmega328
Price	$1.38		$2.15
Core	72 MHz		16MHz
Memories	64 or 128 Kbytes of Flash memory –   20 Kbytes of SRAM		32KBytes of In-System Self-Programmable Flash program Memory – 1KBytes EEPROM – 2KBytes Internal SRAM
Clock, reset and supply management	2.0 to 3.6 V application supply and I/Os –   POR, PDR, and programmable voltage detector (PVD) –   4-to-16 MHz cr ystal oscillator –   Internal 8 MHz factory-trimmed RC –   Internal 40 kHz RC –   PLL for CPU clock –   32 kHz oscillator for RTC with calibration		2.7 - 5.5V
Timers	7 timers –   Three 16-bit timers, each with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder input –   16-bit, motor control PWM timer with dead- time generation and emergency stop –   2 watchdog timers (Independent and Window) –   SysTick timer 24-bit downcounter		3
Communications interfaces	Up to 9 communication interfaces –   Up to 2 x I2C interfaces (SMBus/PMBus) –   Up to 3 USARTs (ISO 7816 interface, LIN, IrDA capability, modem control) –   Up to 2 SPIs (18 Mbit/s) –   CAN interface (2.0B Active) –   USB 2.0 full-speed interface
Analog to digital converter (ADC)	2 x 12-bit, 1 μs A/D converters (up to 16 channels)
I/Os	Up to 80 fast I/O ports –   26/37/51/80 I/Os, all mappable on 16 external interrupt vectors and almost all 5 V-tolerant