Here you can find the source of writeStringMap(ObjectOutputStream out, Map
public static void writeStringMap(ObjectOutputStream out, Map<String, String> map) throws IOException
//package com.java2s; /*/*from w ww .jav a 2s . c om*/ * Copyright 2006 Antonio S. R. Gomes * * 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.IOException; import java.io.ObjectOutputStream; import java.util.Map; public class Main { public static void writeStringMap(ObjectOutputStream out, Map<String, String> map) throws IOException { out.writeInt(map.size()); for (String v : map.keySet()) { out.writeUTF(v); out.writeUTF(map.get(v)); } } }