Here you can find the source of readLine()
public static final String readLine()
//package com.java2s; /**/* w ww . j ava 2 s . c o m*/ * The contents of this file are subject to the Regenstrief Public License * Version 1.0 (the "License"); you may not use this file except in compliance with the License. * Please contact Regenstrief Institute if you would like to obtain a copy of the license. * * Software distributed under the License is distributed on an "AS IS" * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the * License for the specific language governing rights and limitations * under the License. * * Copyright (C) Regenstrief Institute. All Rights Reserved. */ import java.io.*; public class Main { private static BufferedReader in = new BufferedReader(new InputStreamReader(System.in)); /** * Reads a line from standard input * * @return the line **/ public static final String readLine() { try { return in.readLine(); } catch (final IOException e) { throw new RuntimeException(e); } } }