ENVIRONMENT: zshrc, macos, 32G RAM

Prepare#

Install SDK#

• Add curl -s "https://get.sdkman.io" | bash

Install JAVA#

• sdk install java 21.0.2-open
• add export "JAVA_HOME=\$(/usr/libexec/java_home)" to ~/.zshrc

** Install MAVEN#

• sdk install maven

Create Spring Boot Project#

1. Setup and create sprint boot project from spring initializr
   1. Java 21 >> 3.2.4 >> Jar
   2. Dependencies - Spring Web
2. Add hello world at src/main/java/com/example/demo/DemoApplication.java

package com.example.demo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@RestController
public class DemoApplication {
    public static void main(String[] args) {
      SpringApplication.run(DemoApplication.class, args);
    }
    @GetMapping("/hello")
    public String hello(@RequestParam(value = "name", defaultValue = "World") String name) {
      return String.format("Hello %s!", name);
    }
}

3. Execute
   • ./gradlew bootRun
   • or mvn spring-boot:run

RUN#

• http://localhost:8080/hello

You can see the your first application with web in the localhost 😆