title: Help me to fix a bug in this thread example
body: <p>I am trying to create a thread to simply send the text to client. However, if you copy this code to IDE, you will see that there is a red underline under client.getOutputStream(). I do not know what is wrong here. The IDE says "Unhandled exception type IOException". Could anybody tell me?</p>
  
  <pre><code>import java.io.BufferedReader;
  import java.io.InputStreamReader;
  import java.io.PrintWriter;
  import java.net.Socket;
  import java.util.ArrayList;
  import java.util.List;
  
  public class ServerStudentThread extends Thread {
    Socket client; 
  
    public ServerStudentThread(Socket x) {  
      client = x;  
    }
  
    public void run() {
      // create object to send information to client
      PrintWriter out = new  PrintWriter(client.getOutputStream(),true);
  
      out.println("Student name: ");//send text to client;
    }
  }
  </code></pre>
  
  <p>For reference, here is the code that calls the thread.</p>
  
  <pre><code>import java.io.*;
  import java.net.*;
  import java.util.*;
  
  public class Server2 {
    public static void main(String args[]) throws Exception {
      int PORT = 5555;      // Open port 5555
  
      //open socket to listen
      ServerSocket server = new ServerSocket(PORT);
      Socket client = null;
  
      while (true) {
        System.out.println("Waiting for client...");
  
        // open client socket to accept connection
        client = server.accept();
  
        System.out.println(client.getInetAddress()+" contacted ");
        System.out.println("Creating thread to serve request");
  
        ServerStudentThread student = new ServerStudentThread(client);
        student.start();
      }
    }
  }
  </code></pre>