AP CS A - Java Scanner Input

Which of the following would correctly define and instantiate a Scanner?

• Scanner kb = Scanner(in);

• Scanner kb = new Scanner(in);

• Scanner new kb = Scanner(in);

• Scanner kb = new kb(in);

• none of these

Which of the following Scanner methods can be used to read in a int?

• nextInt()

• next()

• nextInts()

• nextDouble()

• nextInteger()

Which of the following Scanner methods can be used to read in a double?

• nextInt()

• nextDble()

• nextDouble()

• next()

• nextLine()

Which of the following Scanner methods can be used to read in a String?

• nextInt()

• nextWord()

• nextDouble()

• next()

• nextLine()

Which of the following Scanner methods can be used to read in a line of words?

• nextInt()

• nextDble()

• nextDouble()

• next()

• nextLine()

Given the following statement, var must be defined as which of the following types?

var = keyboard.nextInt();

• short

• String

• double

• int

Given the following statement, var must be defined as which of the following types?

var = keyboard.nextLine();

• short

• String

• double

• int

Given the following statement, var must be defined as which of the following types?

var = keyboard.next();

• short

• String

• double

• int

Which of the following Scanner methods can be used to read in the value 45?

• nextNumber()

• next()

• nextInt()

• nextLine()

Which of the following Scanner methods can be used to read in the value 52.245?

• nextNumber()

• next()

• nextInt()

• nextLine()

• nextDouble()