Here you can find the source of deserialize(File file)
public static Object deserialize(File file) throws IOException, ClassNotFoundException
//package com.java2s; /*//from w w w . j a v a 2s. co m * Copyright 2014 kohii. * * 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.File; import java.io.FileInputStream; import java.io.IOException; import java.io.ObjectInputStream; public class Main { public static Object deserialize(File file) throws IOException, ClassNotFoundException { if (file.exists() && file.isFile() && file.canRead()) { try (ObjectInputStream ois = new ObjectInputStream(new FileInputStream(file))) { Object obj = ois.readObject(); return obj; } } return null; } }