Jan 31
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You cannot have a modal JFrame. Use a JDialog if you need a modal window.
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You cannot have a modal JFrame. Use a JDialog if you need a modal window.
A session can be closed by calling the invalidate() method of the HttpSession class.
The following example shows how recusion can be used to convert any number from 0 to 99 into words. eg. NumberToWords.numberToWords(34) returns “Thirty Four”. public class NumberToWords { private static final String[] ONES = { "Zero", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine" }; private static final String[] TEENS = { "Ten", "Eleven", "Twelve", "Thirteen", null, "Fifteen", null, null, "Eighteen", null }; private static final String[] TENS = { null, null, "Twenty", "Thirty", "Forty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety" }; public static String numberToWords(int number) { if (number<10) { return ONES[number]; } else if (number<20) { int n = number - 10; String words = TEENS[n]; return words==null ? ONES[n]+"teen" : TEENS[n]; } else { int n = number % 10; return TENS[number/10] + (n==0 ? "" : (" " + numberToWords(n))); } } public static void main(String[] args) { for (int i=0; i<100; i++) { System.out.println(i+" "+numberToWords(i)); } } } |
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