Java tutorial
//package com.java2s; /* * Copyright 2013 the original author or authors. * * 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. */ import java.io.StringWriter; public class Main { static String escape(String input) { StringWriter output = new StringWriter(input.length() * 2); for (int i = 0; i < input.length(); i++) { char c = input.charAt(i); if (c == '"') { output.append("""); } else if (c == '\'') { output.append("'"); } else if (c == '<') { output.append("<"); } else if (c == '>') { output.append(">"); } else if (c == '&') { output.append("&"); } else { output.append(c); } } return output.toString(); } }