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POCreate new thread in for loop inside public void method()
 

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  1. POCreate new thread in for loop inside public void method()
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    <p>I have a class that ping IP addresses. To start ping I have public vod run() method to start pinging. Problem is that I want ping more IP addresses at same time (for each IP address I need new Thread). So how can I create new Thread inside for loop. Here is code of my ping class:</p> <pre><code>public void run() { if (dbConnection.ConnectToDB()) { for (;GateWayKey&lt;=GateWayKeyStop;GateWayKey++) { if(stop || this.isInterrupted()){ return; } ip="192.168."+GateWayKey+".1"; InetAddress address; try { address = InetAddress.getByName(ip); try { if (address.isReachable(PingTime)) { //System.out.println("Pronaden GateWay: "+ip) // labele.IP sql="INSERT INTO `iptables` (`IP` , `COMPUTER_NAME` , `GATEWAY_KEY`) VALUES ('"+ip+"', '"+address.getHostName().toString()+"', '"+GateWayKey+"');"; framedocs.WriteMonitorData (ip, address.getHostName().toString(),"2000","DA",dbConnection.WriteToDB(sql)); for (;SubNetKey&lt;=SubNetKeyStop;SubNetKey++) { if(stop || this.isInterrupted()){ return; } InetAddress addressIps = InetAddress.getByName("192.168."+GateWayKey+"."+SubNetKey); System.out.println("Provjeravam IP: "+addressIps); if (addressIps.isReachable(PingTime)) { ip="192.168."+GateWayKey+"."+SubNetKey; System.out.println("Pronaden IP: "+ip); sql="INSERT INTO `iptables` (`IP` , `COMPUTER_NAME` , `GATEWAY_KEY`) VALUES ('"+ip+"', '"+addressIps.getHostName().toString()+"', '"+GateWayKey+"');"; framedocs.WriteMonitorData (ip, address.getHostName().toString(),"2000","DA",dbConnection.WriteToDB(sql)); } else { framedocs.WriteMonitorData (addressIps.toString(), "N/A","2000","NE","N/A"); } } } else { framedocs.WriteMonitorData (ip, "N/A","2000","NE","N/A"); } } catch (IOException e) { // TODO Auto-generated catch block framedocs.WriteMonitorData (ip, "N/A","2000",e.getMessage(),"N/A"); } } catch (UnknownHostException e) { // TODO Auto-generated catch block ; framedocs.WriteMonitorData (ip, "N/A","2000",e.getMessage(),"N/A"); } } } else { framedocs.WriteMonitorData ("MySQL error", "N/A","N/A","N/A","N/A"); } </code></pre> <p>}</p>
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    1. USZhiZha
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      1. POCreate new thread in for loop inside public void method()
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      1. VTUpMod
    1. COWhat have you tried? Have you read the [Java introduction to concurrency](http://docs.oracle.com/javase/tutorial/essential/concurrency/)?
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      1. USOliver Charlesworth
    2. COYou may want to use a Pool of thread. Anyway just creating the Thread in a For shouldn't be a problem for someone experiencing Threads.
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      1. USMichael Laffargue
    3. COI tried to create thread inside public void function and with every loop I was creating new instance of thread and run it at end. But ofc. that didnt helped :(
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      1. USZhiZha
 

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