Write code to check if a string is Whitespace
//package com.book2s; public class Main { public static void main(String[] argv) { String str = "book2s.com"; System.out.println(isWhitespace(str)); }/* ww w . j ava2s .c o m*/ public static boolean isWhitespace(String str) { if (str == null) { return false; } int length = str.length(); for (int i = 0; i < length; i++) { if (!Character.isWhitespace(str.charAt(i))) { return false; } } return true; } }