I am having difficulty with Java threads. In this program I want it to read TCP and UDP simultaneously, but in my code only when a TCP request has been sent the code will proceed to UDP.
I want them to work simultaneously, can anyone help me?
Here's what I have so far:
public class Newthreads {
ServerSocket socket;
DatagramSocket udpSocket;
private int id=1;
public Newthreads() throws IOException {
socket=new ServerSocket(9000);
udpSocket=new DatagramSocket(5000);
System.out.println("listening on 7000");
System.out.println("udp listening at 5000");
ClientServerThread clientThread=new ClientServerThread(socket);``
clientThread.start();
SlientServerThread e =new SlientServerThread(udpSocket);
e.start();
}
public static void main(String[] args) throws IOException {
new Newthreads();
}
}
class ClientServerThread extends Thread {
Socket clientSocket;
int child;
public ClientServerThread(ServerSocket conn) throws IOException {
//To change body of created methods use File | Settings | File Templates.
System.out.println("i m here");
clientSocket=conn.accept();
}
public void run() {
System.out.println("executing TCP");
}
}
class SlientServerThread extends Thread {
Socket conn;
DatagramPacket recvPacket;
private byte[] recvdata=new byte[10];
SlientServerThread(DatagramSocket tcpSocket) throws IOException {
recvPacket=new DatagramPacket(recvdata,recvdata.length);
tcpSocket.receive(recvPacket);
System.out.println("hey thread 2");
}
您正在ClientServerThread构造函数中执行“接受”操作,该操作在TCP连接进入之前一直处于阻塞状态。在构造函数完成之前,您永远不会进入线程启动。
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