Weird behaviour with Scanner#nextFloat

by

I wonder if you’re not handling an end of line token appropriately. Often if you use Scanner#next###() (except for nextLine), and you reach an end of line token as when the user presses enter, if you don’t handle the end of line token, it will prevent the Scanner object from working appropriately. To solve this, call Scanner#nextLine() when this token needs to be handled. If you post some of your code, we can see if this indeed is your problem and if my suggestion offers a solution.

edit: nope, you’re not using System.in so this is not the problem. On the other hand, you do need to set the locale of the Scanner before accepting the French number. i.e.,

     sc = new Scanner(frenchDecimal);
     sc.useLocale(Locale.FRENCH);
     price = sc.nextFloat();

More Related Contents:

  1. Conditional Statement on Java7
  2. How to use java.util.Scanner to correctly read user input from System.in and act on it?
  3. java.util.NoSuchElementException – Scanner reading user input
  4. How to handle infinite loop caused by invalid input (InputMismatchException) using Scanner
  5. How can I read input from the console using the Scanner class in Java?
  6. Close a Scanner linked to System.in
  7. Scanner vs. BufferedReader
  8. How do I use a delimiter with Scanner.useDelimiter in Java?
  9. Scanner error with nextInt() [duplicate]
  10. Scanner NoSuchElementException
  11. Scanner doesn’t see after space
  12. Reading a .txt file using Scanner class in Java
  13. Java Multiple Scanners
  14. How do I keep a Scanner from throwing exceptions when the wrong type is entered?
  15. Java String Scanner input does not wait for info, moves directly to next statement. How to wait for info? [duplicate]
  16. Read next word in java
  17. Can’t use Scanner.nextInt() and Scanner.nextLine() together [duplicate]
  18. What does scanner.close() do?
  19. Getting User input with Scanner
  20. How to use .nextInt() and hasNextInt() in a while loop
  21. Scanner skipping every second line from file [duplicate]
  22. How to read a text file directly from Internet using Java?
  23. Java Scanner doesn’t wait for user input [duplicate]
  24. Why is hasNext() False, but hasNextLine() is True?
  25. How to use multiple Scanner objects on System.in in Java?
  26. Exception in thread “main” java.io.FileNotFoundException: Error
  27. Why can’t I enter a string in Scanner(System.in), when calling nextLine()-method?
  28. How to put a Scanner input into an array… for example a couple of numbers
  29. How to use Scanner to read silently from STDIN in Java?
  30. Java’s Scanner vs String.split() vs StringTokenizer; which should I use?

Leave a Comment