Here you can find the source of readFile(InputStream is)
public static String readFile(InputStream is) throws IOException
//package com.java2s; /*//from w w w .j a va 2 s.co m * Copyright 2015 Godfinger Framework * * Godfinger Framework 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.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; public class Main { public static String readFile(InputStream is) throws IOException { BufferedReader br = new BufferedReader(new InputStreamReader(is)); try { StringBuilder sb = new StringBuilder(8192); String line; while ((line = br.readLine()) != null) { sb.append(line); } return sb.toString(); } finally { br.close(); } } }