Is it possible to run java application in both commandline / as a webservice

Question

I wantto create a java application like a bitcoin client.But it will work on command-line cmd and as a webservice to to other client consulting my client.Which tecnology should I use to handle my task.Please show me an example explanining issue

Answer 1

Expections

Guess this is what you are expecting

1. Run a Java program from command line or as OS service
2. That program should be a webservice exposing some APIs to other consumers

Solution

• You can do that with the help of Spring MVC, Spring Boot and Maven

Reasons

• Spring MVC could be used for exposing your businesses as REST webservice
• Spring Boot could be used to start a webservice application as a normal Java Application(using main class), without use of external web servers like Tomcat or Jetty
• Maven build tool could be used for creating a fat jar(single jar file with all dependencies) from the Spring Boot application
• You will be running the generated fat jar from command line still the services will be exposed as REST services

Reference

• Use https://start.spring.io/
• This Spring's own hosted tool will generate all the boiler plate codes for you. You just have to import the downloaded zip into your workspace and add your business logic
• For building a fat jar you don't have to do anything special. Just run mvn clean install. The boiler plate will have a pom.xml file that will take care of generating fat jar