Summary of Java environment settings for myself [mac]

OS selection

I think many people use it on Windows, but I chose mac as a personal hobby. It's often annoying, so I'm using a mac unless I'm doing VR or graphics processing.

Java installation

There are many things to say about Java, but this time I will use openJDK. Java open source.

For example, if you want to use java11, select "11.0.2 (build 11.0.2 + 9)" and enter it.

Install it in a suitable place like this.

mv ~/Downloads/jdk-11.0.2.jdk/ /Library/Java/JavaVirtualMachines/

Setting environment variables



#export JAVA_HOME="/Library/Java/JavaVirtualMachines/jdk-10.0.2.jdk"                                            
export JAVA_HOME=$(/usr/libexec/java_home -v 11)
export PATH="$JAVA_HOME/bin:$PATH"
source ~/.bashrc

java -version
>openjdk version "11.0.2" 2019-01-15
>OpenJDK Runtime Environment 18.9 (build 11.0.2+9)
>OpenJDK 64-Bit Server VM 18.9 (build 11.0.2+9, mixed mode)

OK if the java version changes

Insert the IDE

If you use Java IDE, you have two choices, eclipse or InteliJ.

eclipse There are many shares that are overwhelmingly used at Japanese sites. Delicate to the version Sometimes it behaves in a way that I don't understand.

IntelliJ costs money, but it's easy to use. The initial loading is slow, and there are not many Japanese documents. Follow evangelist-like people and get them to lead the community.

Create a workspace for eclipse (go to buy canned coffee)

Create a workspace directory. When I open eclipse, I'm told to select a workspace, so At that time, select the created directory. Import projects into this directory and put usable projects.

Start-up スクリーンショット 2020-04-10 7.18.58.png

Select a workspace. First of all, the startup is slow from here. Sometimes it's early. Let's go buy a canned coffee here. スクリーンショット 2020-04-10 7.17.14.png

スクリーンショット 2020-04-10 7.21.47.png スクリーンショット 2020-04-10 7.24.01.png

In this case, I am trying to import by selecting the folder m ... under the Download folder. There is no project called m ... in the workspace, so I checked the copy. スクリーンショット 2020-04-10 7.25.09.png

Import. Is displayed in the project explorer on the left. スクリーンショット 2020-04-10 7.30.16.png

By the way The project can be opened and closed. It's a good idea to close it when you don't need it. スクリーンショット 2020-04-10 7.30.29.png

スクリーンショット 2020-04-10 7.30.36.png

Inspector to javaEE

スクリーンショット 2020-04-08 22.03.28.png

Build Tool Selection: A Note

Names such as Maven, Gradle, and SBT come up. Those who build java. Select when launching a java project. The format is a little different.

java version selection

First put the path in the IDE スクリーンショット 2020-04-10 7.35.28.png


スクリーンショット 2020-04-09 21.22.36.png

Project right-handed Select your favorite java スクリーンショット 2020-04-09 20.12.11.png

スクリーンショット 2020-04-09 20.27.53.png

Beautiful beautiful

Refresh if weird errors remain

スクリーンショット 2020-04-09 21.24.42.png

スクリーンショット 2020-04-09 20.09.37.png

Framework preparation

If you want to use Spring, install it around here.

スクリーンショット 2020-04-10 7.46.20.png スクリーンショット 2020-04-08 22.00.41.png スクリーンショット 2020-04-08 22.01.41.png

You should have been able to set the environment.

There are some differences in the environment, but I'll leave the rest to other articles.

[mac] [Eclipse] Run Java Spring on jdk10

[Ubuntu18 / mac] [IntelliJ] Set up tomcat9 with jdk10

Extra edition

lombok library

java tends to be redundant, such as around getter setter. It can be omitted by using Lombok. You can omit kotlin, scala, etc., but there is pressure on the site depending on who maintains it.

Press Download from here to download the jar from the installer

Then let's put the jar. Ochimai.

#Just check
ls /hogehoge/lombok.jar
java -jar lombok.jar

Build with CLI

When using gradle

#Put gradle on mac
brew install gradle
#Also clean
brew cleanup

#You will be able to use gradlew. gradlew is gradle+Crawler. Download at the same time when there is no module.
gradle wrapper
gradle build

./gradlew clean bootJar

When using maven

brew install maven
#Also clean
brew cleanup

mysql memo

mysql -uroot -p

create database hoge default character set utf8 collate utf8_general_ci;

docker sample

It works


To be honest, I can't move it.

SpringBoot + Kotlin +Try using Docker
I can't find the eclipse plugin.

I'm addicted to docker + eclipse environment

Conclusion: It's not working in my environment, but can I use remote debugging?

Prepare the development environment for Spring Boot and PostgreSQL with just docker-compose! → Isn't this sample strange? I haven't really enjoyed using docker.

Refresh gradle with eclipse

スクリーンショット 2020-05-13 3.04.16.png


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