What should i learn java and kotlin or flutter?

Question

Which of the both would be better learning java and kotlin or learning flutter?

Answer 1

Of course Java.
Kotlin is used for specific area [ Android ]
Flutter is used for also in Mobile Development but in cross platform [ Android & IOS ]

But java is widely used programming language that can b used in
Mobile Application Development
Desktop Application Development
And also Web Application Development

Answer 2

Start with Java try to build simple Android apps and only then move to Kotlin