Here you can find the source of readStream(InputStream in)
private static String readStream(InputStream in) throws IOException
//package com.java2s; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; public class Main { private static String readStream(InputStream in) throws IOException { StringBuilder sb = new StringBuilder(); BufferedReader r = new BufferedReader(new InputStreamReader(in), 1024);//from ww w .j av a 2 s . c om for (String line = r.readLine(); line != null; line = r.readLine()) { sb.append(line); } in.close(); return sb.toString(); } }