WorksheetsJava Scanner Quiz
Total questions: 15
Worksheet time: 8mins
What is the purpose of the Java Scanner class?
To create graphical user interfaces
To read input from various sources
To manage file outputs
To perform mathematical operations
Which method would you use to read a byte value using a Scanner object?
nextByte()
nextInt()
nextDouble()
next()
What does the `nextLine()` method of the Scanner class do?
It reads a single character
It reads the next token from the input
It reads the next line of text
It reads an integer value
Which import statement is necessary to use the Scanner class in Java?
import java.util.Scanner;
import java.util.*;
import java.Scanner;
import Scanner;
How do you create a new Scanner object to read from standard input in Java?
Scanner scan = new Scanner(System.in);
Scanner scan = new Scanner(System.out);
Scanner scan = new Scanner();
Scanner scan = System.in;
Which method of the Scanner class should be used to check if there is another integer input available?
hasNextInt()
hasNext()
nextInt()
checkInt()
What is the output of `nextDouble()` when used with a Scanner object?
A string
An integer
A double
A boolean
To read a full name including spaces using Scanner, which method should you use?
next()
nextLine()
readString()
readLine()
What happens if you use `nextInt()` to read an input that is not an integer?
The program will convert it to an integer
The program will skip the input
The Scanner throws an InputMismatchException
The program will terminate
Which method from the Scanner class is best for reading a single word from the user input?
nextLine()
next()
read()
readWord()
How can you close a Scanner object named `scan`?
scan.close();
scan.end();
close(scan);
end(scan);
What is the correct way to read a boolean value using Scanner?
nextBoolean()
nextBool()
readBoolean()
getBoolean()
If you want to use a delimiter other than whitespace in Scanner, which method should you use?
setDelimiter()
useDelimiter()
delimiter()
setDelimit()
Which method would you use to read a long integer using a Scanner object?
nextLong()
nextInt()
nextDouble()
next()
What does the `hasNext()` method of the Scanner class check for?
If the next input matches an integer
If there is another line in the input
If there is any input available regardless of its type
If the input is a valid Java identifier
