Question

Consider the following code snippet. Scanner inputFile = new Scanner("hoursWorked.txt"); Which of the following statements is correct? This code will open an existing file named "hoursWorked.txt" for reading. This code will create a new file named "hoursWorked.txt". This code will treat the string "hoursworked.tht" as an input value. This code will open a file named "hoursworked.txt" for writing. • Previous

Answer 1

The right answer is:

This code will treat the string "hoursWorked.txt" as an input value. (third option)

Explanation:

Scanner is used to read inputs from a given stream. If you want to read from a file, you should pass the file object to the constructor, like this: Scanner inputFile=new Scanner(new File("hoursWorked.txt")); If you just pass a String, like the above code, it will treat the String "hoursWorked.txt" as the input, not the file. So, inputFile.next() or  inputFile.nextLine() will return the string "hoursWorked.txt". Another example: if you create a scanner like this: Scanner scanner=new Scanner("Hello world how are you?"); then the scanner will have 5 tokens, "Hello", "world", "how", "are", "you?" each of which will be returned in subsequent calls to the next() method.

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