Joseph  Murray

Joseph Murray

1621511340

Minimum Java Knowledge Requirements for Your First Coding Job

What does a potential Java junior need to know to get their first job or even qualify for a trainee position in a good company? What tools will help a Java programmer reach the next level? Which technologies should you study, and which ones are better to hold off on?

There is no standard answer to these questions, just as there is no single action plan that would suit absolutely everyone. Some companies are striving for development, constantly introducing new technologies and testing the capabilities of new versions of the language, while others stubbornly cling to old ones. There are also middle options, and perhaps these are most of them.

I get asked this question so often that I decided to write an article that I can then refer to in order to answer it. In addition, it will be useful not only to those who ask me personally but also to everyone who has already decided (or did not decide in any way) to connect their lives with Java programming.

#java #java-development-resources #java-development #learn-to-code #learning-to-code #beginners #tutorial-for-beginners #beginners-to-coding

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Minimum Java Knowledge Requirements for Your First Coding Job
Joseph  Murray

Joseph Murray

1621511340

Minimum Java Knowledge Requirements for Your First Coding Job

What does a potential Java junior need to know to get their first job or even qualify for a trainee position in a good company? What tools will help a Java programmer reach the next level? Which technologies should you study, and which ones are better to hold off on?

There is no standard answer to these questions, just as there is no single action plan that would suit absolutely everyone. Some companies are striving for development, constantly introducing new technologies and testing the capabilities of new versions of the language, while others stubbornly cling to old ones. There are also middle options, and perhaps these are most of them.

I get asked this question so often that I decided to write an article that I can then refer to in order to answer it. In addition, it will be useful not only to those who ask me personally but also to everyone who has already decided (or did not decide in any way) to connect their lives with Java programming.

#java #java-development-resources #java-development #learn-to-code #learning-to-code #beginners #tutorial-for-beginners #beginners-to-coding

Samanta  Moore

Samanta Moore

1621137960

Guidelines for Java Code Reviews

Get a jump-start on your next code review session with this list.

Having another pair of eyes scan your code is always useful and helps you spot mistakes before you break production. You need not be an expert to review someone’s code. Some experience with the programming language and a review checklist should help you get started. We’ve put together a list of things you should keep in mind when you’re reviewing Java code. Read on!

1. Follow Java Code Conventions

2. Replace Imperative Code With Lambdas and Streams

3. Beware of the NullPointerException

4. Directly Assigning References From Client Code to a Field

5. Handle Exceptions With Care

#java #code quality #java tutorial #code analysis #code reviews #code review tips #code analysis tools #java tutorial for beginners #java code review

Tyrique  Littel

Tyrique Littel

1600135200

How to Install OpenJDK 11 on CentOS 8

What is OpenJDK?

OpenJDk or Open Java Development Kit is a free, open-source framework of the Java Platform, Standard Edition (or Java SE). It contains the virtual machine, the Java Class Library, and the Java compiler. The difference between the Oracle OpenJDK and Oracle JDK is that OpenJDK is a source code reference point for the open-source model. Simultaneously, the Oracle JDK is a continuation or advanced model of the OpenJDK, which is not open source and requires a license to use.

In this article, we will be installing OpenJDK on Centos 8.

#tutorials #alternatives #centos #centos 8 #configuration #dnf #frameworks #java #java development kit #java ee #java environment variables #java framework #java jdk #java jre #java platform #java sdk #java se #jdk #jre #open java development kit #open source #openjdk #openjdk 11 #openjdk 8 #openjdk runtime environment

Samanta  Moore

Samanta Moore

1624955940

12 Common Java Mistakes Made by Newcomers

Everyone makes mistakes, not just beginners, but even professionals. This article goes over a dozen common mistakes that Java newbies and newcomers make and how to avoid them. Have you or your colleagues made any of these common Java mistakes early in your career?

Everyone makes mistakes, not only learners or beginners but professionals. As a programming course, the CodeGym team often collects mistakes of newbies to improve our auto validator. This time we decided to interview experienced programmers about mistakes in Java they made closer to their careers start or noticed them among their young colleagues.

We collected their answers and compiled this list of dozen popular mistakes Java beginners make. The order of errors is random and does not carry any special meaning.

#java #learn-java #java-programming #beginners #beginners-to-coding #learning-to-code #learn-to-code #learn-to-code-java

Mike  Kozey

Mike Kozey

1655243220

A Weather_widget Used for Flutter with Many Custom Config

weather_widget

Simple weather related widget, which can be freely combined to form a variety of weather backgrounds

Getting Started

depend

Add this to your package's pubspec.yaml file:

dependencies:
  weather_widget: ^1.0.6

Weatherwidget is easy to use, just add weatherwidget to start using

WeatherWidget(
             size:Size.infinite,
             weather:'Sunny',
             sunConfig:SunConfig()
         ),   

This will add a sunny day using the default settings
sunny
or other weather type
(Note: Raindrops and snowflakes need to specify the default number, and they will move randomly within the range)

WeatherWidget(
             size:Size.infinite,
             weather:'Cloudy',
             cloudConfig:CloudConfig()
         ),

WeatherWidget(
             size:Size.infinite,
             weather:'Rainy',
             rainConfig:RainConfig(
              rainNum:'the num of raindrops you want' 
             )
         ),


WeatherWidget(
             size:Size.infinite,
             weather:'Snowy',
             snowConfig:SnowConfig(
              snowNum:'the num of snowflakes you want' 
             )
         ),


WeatherWidget(
             size:Size.infinite,
             weather:'Thunder',
             thunderConfig:ThunderConfig()
         ),

rainy snowy thunder

Of course, each config contains other settings, such as the range, size, length, falling speed and color of random raindrops. You can use them to create hailstones and other weather features
If the default weather is not enough, you can use individual widgets and stack() widget to piece together the desired weather
Like this sunset breeze, etc
sunset breeze snow with rain thunder with rain
These are include in this widget
background

    BackgroundWidget(List<Color>,size)

cloud

    CloudWidget (Color)

A single random raindrop

RainWidget (
                         @required rainRangeXStart, #X-axis starting point of raindrop random occurrence
                         @required rainRangeXEnd,  
                         @required rainRangeYStart,
                         @required rainRangeYEnd,
                         @required durationRangeStartMill,  #Minimum time to fall
                         @required durationRangeEndMill,    
                         rainLength,
                         rainWidth,
                         rainColor,
                         rainCurve  #Curve of falling animation
                         )

A single random snowflake

SnowWidget (
                         this.snowAreaXStart,  #X-axis starting point of snowflake random occurrence
                         this.snowAreaXEnd,    
                         this.snowWaveRangeMin,    #The minimum floating distance of snowflakes
                         this.snowWaveRangeMax,    
                         this.snowFallSecMin,  #Minimum time of snowflake falling
                         this.snowFallSecMax,  
                         this.snowWaveSecMin,  #Minimum time for snowflake to float
                         this.snowWaveSecMax,
                         this.snowSize,
                         this.snowColor,
                         this.snowAreaYStart,   #Y-axis point of snowflake occurrence
                         this.snowAreaYEnd,    
                         this.waveCurve,        #Floating animation curve
                         this.fadeCurve         #Vanish animation curve
)

A single flash

ThunderWidget (
                         this.flashMillStart,   #Minimum flashing time
                         this.flashMillEnd,     
                         this.pauseMillStart,   #Minimum interval time
                         this.pauseMillEnd,     
                         this.blurStyle,        #blur model
                         this.blurSigma,        
                         this.points,
                         this.color,
                         this.width
)

a single wind

WindWidget (
                        this.pauseMillStart,    #Minimum interval time
                        this.pauseMillEnd,     
                        this.windPositionY,     #Y-axis point of wind occurrence
                        this.windSlideMill,     #Passing time
                        this.windColor,
                        this.windWidth,
                        this.windSlideXEnd,     
                        this.windSlideXStart,   
                        this.windGap,           #line spacing in a wind
                        this.blurStyle,
                        this.blurSigma
)

Using sunny weather by set the WeatherWidget background config in a sunConfig()

Installing

Use this package as a library

Depend on it

Run this command:

With Flutter:

 $ flutter pub add weather_widget

This will add a line like this to your package's pubspec.yaml (and run an implicit flutter pub get):

dependencies:
  weather_widget: ^1.0.6

Alternatively, your editor might support flutter pub get. Check the docs for your editor to learn more.

Import it

Now in your Dart code, you can use:

import 'package:weather_widget/WeatherWidget.dart';
import 'package:weather_widget/example/main.dart';

example/main.dart

import 'package:flutter/material.dart';
import 'package:weather_widget/WeatherWidget.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: WeatherWidget(
          size: Size.infinite,
          weather: 'Thunder',
          thunderConfig:ThunderConfig(
            thunderWidth:12
          )
    )
    );
  }
}

chinese 中文README

Author: Carendule
Source Code: https://github.com/carendule/WeatherWidget 
License: View license

#flutter #dart #widget