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Have you read the API documentation for that method? It explains what it does.
Go to this link: http://docs.oracle.com/javase/8/docs/api/index.html
Find the class Scanner in the frame in the...

Please copy the full text of the error message and paste it here. It has important info about the error.


A value is given to a variable using an assignment stateement (has the =)

variable...

What is hello? A String variable or is it supposed to be a String? If so it should be enclosed in "s: "hello"
Also statements should end with a ;


The above statement defines/declares a...

Which line is the top line? It might be clearer if a comment were added to the line your are asking about.
I do not see any line where scanner appears twice. Case is important in java. scanner is...