Java tutorial
//package com.java2s; //License from project: Apache License import android.os.StrictMode; import java.io.IOException; import java.net.HttpURLConnection; import java.net.URL; public class Main { public static boolean isAvailable(String urlString) throws IOException { try { StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build(); StrictMode.setThreadPolicy(policy); URL url = new URL(urlString); HttpURLConnection urlc = (HttpURLConnection) url.openConnection(); urlc.setRequestProperty("Connection", "close"); urlc.setConnectTimeout(1000); urlc.connect(); if (urlc.getResponseCode() == 200) { return true; } else { return false; } } catch (Exception e) { e.printStackTrace(); } return false; } }