Here you can find the source of readTextFile(File file)
public static List<List<String>> readTextFile(File file) throws FileNotFoundException
//package com.java2s; /*/*from ww w . j ava2 s. c o m*/ * Copyright (C) 2015 The 8-Bit Bunch. Licensed under the Apache License, Version 1.1 * (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-1.1>. * 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.File; import java.io.FileNotFoundException; import java.io.FileReader; import java.util.Arrays; import java.util.List; import java.util.stream.Collectors; public class Main { public static List<List<String>> readTextFile(File file) throws FileNotFoundException { BufferedReader reader = new BufferedReader(new FileReader(file)); return reader.lines().map(line -> Arrays.asList(line.split("\\t"))).collect(Collectors.toList()); } }