Here you can find the source of deserialize(String str)
public static Object deserialize(String str) throws IOException
//package com.java2s; /**/*from w w w . j ava 2 s.c o m*/ * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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.ByteArrayInputStream; import java.io.IOException; import java.io.ObjectInputStream; public class Main { public static Object deserialize(String str) throws IOException { if (str == null || str.length() == 0) { return null; } try { ByteArrayInputStream serialObj = new ByteArrayInputStream( decodeBytes(str)); ObjectInputStream objStream = new ObjectInputStream(serialObj); return objStream.readObject(); } catch (Exception e) { throw new IOException("Deserialization error: " + e.getMessage(), e); } } public static byte[] decodeBytes(String str) { byte[] bytes = new byte[str.length() / 2]; for (int i = 0; i < str.length(); i += 2) { char c = str.charAt(i); bytes[i / 2] = (byte) ((c - 'a') << 4); c = str.charAt(i + 1); bytes[i / 2] += (c - 'a'); } return bytes; } }