What is a Scanner?

Are you preparing for IT certification? With practice questions, study notes, interactive quizzes, tips and technical articles, uCertify PrepKits ensure that you get a solid grasp of core technical concepts to ace your certification exam in first attempt.

What is a Scanner?

Rating:

Scanner is a class present in the java.util package. Like the BufferedReader class, this class is used to take user inputs. However, unlike BufferedReader, which throws checked IOException, it does not throw any checked exception. In addition to taking an input from the user, it is also used to parse through the elements of the code. This class contains the hasNext, hasNextLine, hasNextInt, and hasNextDouble methods to check whether any more element is present. It throws an unchecked InputMismatchException, if the next token is not of the correct type.
Example:

      Scanner s= new Scanner(System.in);
      String str= s.next();
      int nextvalue=s.nextInt();
      s.close();


Rating:



Other articles

Click here to Article home

 
uCertify.com | Our Company | Articles | Privacy | Security | Contact Us | News and Press Release | uCertify India
MCSE: MCSA, MCTS, MCITP    JAVA Certification: SCJP, SCWCD Cisco Certification: CCNA, CCENT, A+, Network+, Security+
Oracle Certification: OCP 9i, OCP 10g, OCA 9i, OCA 10g CIW foundation    EC-212-32    CISSP    Photoshop ACE    Adobe Flash ACE
© 2008 uCertify.com. All rights reserved. All trademarks are the property of their respective owners.