Here you can find the source of newOutputStream()
public static OutputStream newOutputStream()
//package com.java2s; /**//from w w w . j a v a 2 s.c o m * Copyright (c) 2005-2010, WSO2 Inc. (http://www.wso2.org) All Rights Reserved. * * WSO2 Inc. 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.ByteArrayOutputStream; import java.io.OutputStream; public class Main { public static OutputStream newOutputStream() { return new ByteArrayOutputStream(); } }