Write code to replace Whitespaces
//package com.book2s; public class Main { public static void main(String[] argv) { String string = "b oo k2s.com"; System.out.println(replaceWhitespaces(string)); }//from w w w . j a va2 s.c om public static String replaceWhitespaces(String string) { StringBuilder builder = new StringBuilder(string); for (int i = 0; i < builder.length(); i++) { char c = builder.charAt(i); if (Character.isWhitespace(c)) builder.setCharAt(i, '_'); } return builder.toString(); } }