Let's shift our attention to path variables. Path variables are used to bind values from the URI to a variable on the controller method. In the following example, we want to parameterize the name so that we can customize the welcome message with a name:

    private static final String helloWorldTemplate = "Hello World, 
    %s!";

   @GetMapping("/welcome-with-parameter/name/{name}")
   public WelcomeBean welcomeWithParameter(@PathVariable String name) 
    {
       return new WelcomeBean(String.format(helloWorldTemplate, name));
    }

A few important things to note are as follows:

• @GetMapping("/welcome-with-parameter/name/{name}"): {name} indicates that this value will be the variable. We can have multiple variable templates in a URI.
• welcomeWithParameter(@PathVariable String name): @PathVariable ensures that the variable value from the URI is bound to the variable name.
• String.format(helloWorldTemplate, name): A simple string format to replace %s in the template with the name.