Question

assume that inputfile references a scanner object that was used to open a file. which of the following while loops is the correct way to read data from the file until the end of the file is reached? while (inputfile.nextline == \ \) { ... } while (inputfile != null) { ... } while (!inputfile.eof) { ... } while (inputfile.hasnext()) { ... }

Explanation:

In Java, when using the Scanner class to read from a file, the hasNext() method is used to check if there is more input available. The nextLine == " " checks for an empty string in an incorrect way. inputFile != null checks if the Scanner object exists, not end - of - file. Java's Scanner doesn't have an EOF property like in some other languages.

Answer:

D. while (inputFile.hasNext()) {... }