Continuous Delivery with Docker and Jenkins

Creating business logic

The first version of the calculator will be able to add two numbers. Let's add the business logic as a class in the src/main/java/com/leszko/calculator/Calculator.java file:

package com.leszko.calculator;import org.springframework.stereotype.Service;@Servicepublic class Calculator {     int sum(int a, int b) {          return a + b;     }}

To execute the business logic, we also need to add the web service controller in a separate file src/main/java/com/leszko/calculator/CalculatorController.java:

package com.leszko.calculator;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.bind.annotation.RestController; ...