Here you can find the source of readLines(InputStream is)
public static List<String> readLines(InputStream is) throws IOException
//package com.java2s; /**//from ww w. ja v a 2 s .com * Copyright 2005-2015 Red Hat, Inc. * * Red Hat 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.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.LineNumberReader; import java.io.Reader; import java.util.ArrayList; import java.util.List; public class Main { public static List<String> readLines(InputStream is) throws IOException { List<String> answer = new ArrayList<String>(); LineNumberReader reader = new LineNumberReader(new InputStreamReader(is)); String line = reader.readLine(); while (line != null) { answer.add(line); line = reader.readLine(); } return answer; } public static List<String> readLines(Reader in) throws IOException { List<String> answer = new ArrayList<String>(); LineNumberReader reader = new LineNumberReader(in); String line = reader.readLine(); while (line != null) { answer.add(line); line = reader.readLine(); } return answer; } }