[Solved] Why Spring documentation is not perfect [closed]

Question

you are not sending RequestParam value, you need to mark it required=false
so your method will

public String greeting(@RequestParam(value = "name", required=false, defaultValue = "World") String name){

Accepted Answer

you are not sending RequestParam value, you need to mark it required=false
so your method will

public String greeting(@RequestParam(value = "name", required=false, defaultValue = "World") String name){