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POJava: Throw an exception to another Thread
 

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    <p>I have a java code like this:</p> <pre><code>private class Uploader implements Runnable { // ... public void start() { t.start(); } public void run() { try { while(i=in.read()) { output.write(i); // THIS IS A BLOCKING CALL !! } } catch(ProtocolException e) { ... } catch(IOException e1) { ... } } private void restore() { ... } private class Checker implements Runnable { // ... @Override public void run() { // I WANT (IN A PARTICULAR MOMENT) TO THROW AN // EXCEPTION INTO THE Uploader RUN METHOD FROM HERE, // IS IT POSSIBLE? } } } </code></pre> <p>The problem is that i have a blocking write() in the Run() method, so I have added a new thread that checks whether or not the connection is transmitting: if it's not trasmitting I want to stop the blocking write() using the exception mechanism (throwing an exception to the other thread's run() method from the checker thread). Is it possible?</p> <p><strong>EDIT [SOLVED]:</strong></p> <p><strong>The only way is to brutally close the output stream and to work on the amount of written bits to check whether the connection is transmitting:</strong></p> <pre><code>private class Uploader implements Runnable { private OutputStream output; private int readedBits; public void run() { try { while(i=in.read()) { output.write(i); readedBits++; } } catch(IOException e1) { // ENTERS HERE IF RESTORE() IS CALLED } } private void restore() { try { output.close(); } catch (IOException e) {} // Restore connection .... } private int getReadedBits() { return this.readedBits; } private class Checker implements Runnable { // ... @Override public void run() { while(true) { try { Thread.sleep(timeout); } catch (InterruptedException e1) {} if(lastReaded &gt;= getReadedBits()) restore(); else lastReaded = getReadedBits(); } } } } </code></pre>
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