Throwing exceptions in threads

Question

I made a thread class that uses a BufferedReader object wrapped in a InputStream and Socket object inside the run() method that uses the command this.input.readline().
The only problem is that in order to use this method, I need to throw java.io.IOException. When I try and do this, it says:
"The method void run() declared in class InputThread cannot overide the method of the same signature declared in class java.land.Thread. Their throws clauses are incompatible."
Here is my original code:
class InputThread extends Thread {
     BufferedReader input;
     public InputThread(BufferedReader input) {
          this.input = input;
     public void run() {
          String intext = "";
          while (true) {
               intext = this.input.readLine();
               if (intext != "") {
                    System.out.println("Thread received: " + intext);
}How can I still use the this.input.readLine() function in the InputThread class?
(I already tried "public void run() throws java.io.IOException {")
Thanks!

Answer 1

The run method should handle all exceptionn that could occur in the
contained code. There's als no point in propagating a (checked) exception
to a higher level by wrapping it in an unchecked exception like RuntimeException
which is not commited to be declared in the throws clause.
So ...
public void run() {   
   try {
   } catch (Exception ex) {
      throw new RuntimeException("bla", ex);
} ...would compile. BUT where would you catch the exception??? Don't be mistaken,
but the exception is never propagated to the code that started the thread!!!
Threads are the end points for exceptions because they run parallel to other code.
In my opinion the best and most correct code would be:
class InputThread extends Thread {
     BufferedReader input;
     public InputThread(BufferedReader input) {
          this.input = input;
     public void run() {
          String intext = "";
          try {
              while (true) {
               intext = this.input.readLine();
               if (intext != "") {
                    System.out.println("Thread received: " + intext);
                } catch (IOEXception ex) {
                    // log exception and die gracefully
}