Mac M1 Java springboot development setup

Prerequisite

Install homebrew

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

Install java

brew install java
# if you want to install multi-version
brew install --cask adoptopenjdk8
brew install --cask adoptopenjdk11
brew install --cask adoptopenjdk16

these will be installed into /Library/Java/JavaVirtualMachines/ which is the traditional location on Mac OSX.

For M1 Mac, Since zsh is the default Terminal shell, so place script below either in your ~/zprofile / or ~/.zshenv or ~/.zshrc

export JAVA_8_HOME=$(/usr/libexec/java_home -v1.8)
export JAVA_11_HOME=$(/usr/libexec/java_home -v11)
alias java8='export JAVA_HOME=$JAVA_8_HOME'
alias java11='export JAVA_HOME=$JAVA_11_HOME'
# default to Java 11
java11

then you can use command java8 or java11 to switch your java runtime version

$ java8
$ java11
# or you can echo to show java_home path
$ echo $JAVA_HOME

Install maven

brew install maven

Check maven version

mvn --version

Install spring boot

brew tap spring-io/tap
brew install spring-boot

In VSCode install extension

#Java Extension Pack
https://marketplace.visualstudio.com/items?itemName=vscjava.vscode-java-pack
#Maven for java
https://marketplace.visualstudio.com/items?itemName=vscjava.vscode-maven
#Spring Boot Extension Pack
https://marketplace.visualstudio.com/items?itemName=Pivotal.vscode-boot-dev-pack

Setup Setting.json in vscode

Code > Preference > Settings

Search “maven” and click Edit in setting.json

Initialise Spring Boot project

In vscode, command + shift + p and choose Spring initializr: Create a Maven Project

Name your project, that says, Demo, then I generate DemoApplication

Add a test restful API in DemoApplication.java (Later should better add into another file call xxxController rather than in Application level

Import 2 packages below

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

Modify the class

@RestController
@SpringBootApplication
public class DemoApplication {
   public static void main(String[] args) {
     SpringApplication.run(DemoApplication.class, args);
   }
   @RequestMapping("/")
   public String home() {
     return "Hello world, Java Spring boot.";
   }
}

To run project, you can either use command or debug mode to run it,

Start up project by using command (base on official link) https://spring.io/guides/gs/rest-service/

./mvnw spring-boot:run

Start up project to use vscode debug mode, first add .vscode/launch.json if you want to enable debug mode

{  
    "version": "0.2.0",  
    "configurations": [  
        {  
            "type": "java",  
            "name": "Launch Current File",  
            "request": "launch",  
            "mainClass": "${file}"  
        },  
        {  
            "type": "java",  
            "name": "Launch DemoApplication",  
            "request": "launch",  
            "mainClass": "com.example.demo.DemoApplication",  
            "projectName": "demo"  
        }  
    ]  
}

Click F5

Test your application, http://localhost:8080/

Here is the link of the example, enjoy !