Which method reads a float value from the user?

Which method reads a float value from the user?

• A. scanner.nextDouble()
• B. scanner.nextFloat()
• C. scanner.nextLine()
• D. scanner.nextInt()

Answer: (B)

Reading a floating-point number from user input with Scanner uses nextFloat(), which parses the next token as a 32-bit floating-point value and returns it as a primitive float. This is the method that matches the request to read a float. So, if you have code like Scanner scanner = new Scanner(System.in); float value = scanner.nextFloat(); it will read the next number the user types (for example 3.14) as a float. If the next token can’t be parsed as a float, an InputMismatchException is thrown, which you can guard against with hasNextFloat() or by handling the exception. Other methods read different types or text: nextDouble() reads a double (64-bit), nextInt() reads an int, and nextLine() reads an entire line as a string, not a numeric value.

Reading a floating-point number from user input with Scanner uses nextFloat(), which parses the next token as a 32-bit floating-point value and returns it as a primitive float. This is the method that matches the request to read a float.

So, if you have code like Scanner scanner = new Scanner(System.in); float value = scanner.nextFloat(); it will read the next number the user types (for example 3.14) as a float. If the next token can’t be parsed as a float, an InputMismatchException is thrown, which you can guard against with hasNextFloat() or by handling the exception.

Other methods read different types or text: nextDouble() reads a double (64-bit), nextInt() reads an int, and nextLine() reads an entire line as a string, not a numeric value.