Here you can find the source of readFile(File file)
public static String readFile(File file) throws IOException
//package com.java2s; //License from project: Apache License import java.io.BufferedReader; import java.io.File; import java.io.FileReader; import java.io.IOException; public class Main { public static String readFile(File file) throws IOException { StringBuilder result = new StringBuilder(); BufferedReader fileReader = new BufferedReader(new FileReader(file)); String line = new String(); while ((line = fileReader.readLine()) != null) { result.append(line).append("\n"); }/*from www . ja v a2s .c o m*/ fileReader.close(); return result.toString(); } }