ZCW-SpringZero/initial/src/main/java/hello/GreetingControl.java

package hello;

import java.util.concurrent.atomic.AtomicLong;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
@RestController
class GreetingController {
    private static final String template = "Hello, %s!";
    private final AtomicLong counter = new AtomicLong();
    @RequestMapping("/greeting")//BY Default get
    public Greeting greeting(@RequestParam(value="name", defaultValue="World") String name) {
        return new Greeting(counter.incrementAndGet(), String.format(template, name));

        // returns a new Greeting object with id and content attributes based on the next value from the counter
                //String.format(template, name);//and formats the given name by using the greeting template
    }
}