Here you can find the source of readAll(InputStream inputStream, Charset encoding)
public static String readAll(InputStream inputStream, Charset encoding) throws IOException
//package com.java2s; /*/*from ww w .ja v a2 s. co m*/ * Copyright 2016 Christoph B?hme * * 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.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.Reader; import java.nio.CharBuffer; import java.nio.charset.Charset; public class Main { static final int BUFFER_SIZE = 4096; public static String readAll(InputStream inputStream, Charset encoding) throws IOException { try (Reader reader = new InputStreamReader(inputStream, encoding)) { return readAll(reader); } } public static String readAll(Reader reader) throws IOException { final StringBuilder loadedText = new StringBuilder(); try (Reader bufferedReader = new BufferedReader(reader)) { final CharBuffer buffer = CharBuffer.allocate(BUFFER_SIZE); while (bufferedReader.read(buffer) > -1) { buffer.flip(); loadedText.append(buffer); buffer.clear(); } return loadedText.toString(); } } }