Write code to trim All Whitespace from a string
//package com.book2s; public class Main { public static void main(String[] argv) { String str = "book2s.com"; System.out.println(trimAllWhitespace(str)); }/*w ww . j a v a 2 s. co m*/ public static String trimAllWhitespace(String str) { if (!hasLength(str)) { return str; } StringBuffer buf = new StringBuffer(str); int index = 0; while (buf.length() > index) { if (Character.isWhitespace(buf.charAt(index))) { buf.deleteCharAt(index); } else { index++; } } return buf.toString(); } public static boolean hasLength(String str) { return (str != null && str.length() > 0); } }