Here you can find the source of toInputStream(File file)
static InputStream toInputStream(File file) throws IOException
//package com.java2s; /*/*from w w w .java 2s .c om*/ * Copyright 2011 Red Hat inc. and third party contributors as noted * by the author tags. * * 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.*; public class Main { static InputStream toInputStream(File file) throws IOException { return new FileInputStream(file); } }