Java Scanner Library

To read input from the user the scanner object must accept _______________ as a constructor.

• System.in

• A string

• A file name

• A file object

Which correctly creates a scanner object?

• Scanner objectName = Scanner ();

• Scanner objectName = new Scanner ();

• Scanner objectName = Scanner (System.in);

• Scanner objectName = new Scanner (System.in);

The Scanner method used to read a string value from the user is: (tick ALL correct options)

• next()

• nextString()

• nextLine()

• Next()

• NextLine()

Scanner can get a whole number from the user using:

• next()

• nextInterger()

• nextInt()

• readInt()

• readInteger()

To read input from a data file the scanner object must accept _______________ as a constructor.

• System.in

• A string

• A file name

• A file object

nextDouble is used to read in:

• Whole number

• Number with a decimal point

• Text

• A True / False value

The purpose of hasNextInt is:

• to check that the input is a Whole number

• to check that the input is a number with a decimal point

• to check that the input is text

• to check that the input is a True / False value

To use the scanner class you need to import

• java.io.file

• java.io.Scanner

• java.util.file

• java.util.Scanner

In the code below the variable xyz must be of type:

myFile = new File ("myfile.txt");

try{

myFileScanner = new Scanner (myFile);

while (myFileScanner.hasNextLine () ) {

xyz = scanner.nextLine ();

}

}

• String

• int

• double

• char

• boolean

The Scanner can only work with user input.

• True

• False