Arrow function?

Question

Java

Hello.

Please help me get rid of the lambda expression.

@Controller
class RunAsController {

    @Autowired
    RunAsService runAsService;



    @Secured({ "ROLE_USER", "RUN_AS_REPORTER" })
    @ResponseBody
    @GetMapping("/runs")
    public String tryRunAs() {

        Authentication auth = runAsService.getCurrentUser();
        auth.getAuthorities().forEach(a -> System.out.println(a.getAuthority()));
        return "Current User Authorities inside this RunAS method only " + auth.getAuthorities().toString();

    }

}

I promise to study them soon.

Answer 1

auth.getAuthorities().forEach(a -> System.out.println(a.getAuthority()));

something like this:

for (Authority a : auth.getAuthorities()) {
System.out.println(a.getAuthority());
}

Answer 2

for / foreach by auth.getAuthorities() {. }