Curl.java

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;

// java Curl.java
public class Curl {

	public static void main(String[] args) throws Exception {
		URL url = new URL("https://start.spring.io/starter.zip?name=reservation-service-1" +
			"&groupId=com.example&artifactId=reservation-service-1&version=0.0.1-SNAPSHOT&description=Demo+project+for+Spring+Boot&packageName=com.example.demo&type=maven-project&packaging=jar&javaVersion=1.8&language=java&" +
			"bootVersion=2.0.5.RELEASE&dependencies=devtools&dependencies=data-mongodb-reactive" +
			"&dependencies=actuator&dependencies=webflux");
		try (InputStream inputStream = url.openStream();
							OutputStream outputStream = new FileOutputStream(
								new File(new File(System.getProperty("user.home"), "Desktop"), "reactive-spring.zip"))) {
			inputStream.transferTo( outputStream);
		}
	}
}