Here you can find the source of toBlob(Serializable object)
static byte[] toBlob(Serializable object) throws IOException
//package com.java2s; /*/*from w ww. jav a2 s.com*/ * Copyright (C) 2015 Contentful GmbH * * 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.ByteArrayOutputStream; import java.io.IOException; import java.io.ObjectOutputStream; import java.io.Serializable; public class Main { static byte[] toBlob(Serializable object) throws IOException { ObjectOutputStream oos = null; ByteArrayOutputStream bos; byte[] result = null; try { bos = new ByteArrayOutputStream(); oos = new ObjectOutputStream(bos); oos.writeObject(object); result = bos.toByteArray(); } finally { if (oos != null) { try { oos.close(); } catch (IOException e) { e.printStackTrace(); } } } return result; } }