Java tutorial
//package com.java2s; /* * Copyright (C) 2015 Ren Jeschke <rene_jeschke@yahoo.de> * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ public class Main { public static void escapedAdd(final StringBuilder sb, final String str) { for (int i = 0; i < str.length(); i++) { final char ch = str.charAt(i); if (ch < 33 || Character.isWhitespace(ch) || Character.isSpaceChar(ch)) { sb.append(' '); } else { switch (ch) { case '"': sb.append("""); break; case '\'': sb.append("'"); break; case '<': sb.append("<"); break; case '>': sb.append(">"); break; case '&': sb.append("&"); break; default: sb.append(ch); break; } } } } }