Dhiraj Sardarjavablogwithdhiraj.hashnode.dev·May 2, 2023Exploring Java Wildcards: When to Use Unbounded, Upper or Lower BoundedIn Java, a wildcard is a special syntax that allows you to specify a type parameter as "unknown" or "unspecified". It is denoted by the question mark character ? and can be used in a few different ways. The three main types of wildcards in Java are: ...JavaAdd a thoughtful commentNo comments yetBe the first to start the conversation.