java - Page 873 - Developer IT

Force Tomcat to email any Exception?

- by mabuzer

How can I force tomcat to email any Exception?

hi guys, if i put a thread to sleep in a loop, netbeans gives me a caution saying Invoking Thread.sleep in loop can cause performance problems. However, if i were to replace the sleep with join, no such caution is given. Both versions compile and work fine tho. My code is below (check the last few lines for "Thread.sleep() vs t.join()"). public class Test{ //Display a message, preceded by the name of the current thread static void threadMessage(String message) { String threadName = Thread.currentThread().getName(); System.out.format("%s: %s%n", threadName, message); } private static class MessageLoop implements Runnable { public void run() { String importantInfo[] = { "Mares eat oats", "Does eat oats", "Little lambs eat ivy", "A kid will eat ivy too" }; try { for (int i = 0; i < importantInfo.length; i++) { //Pause for 4 seconds Thread.sleep(4000); //Print a message threadMessage(importantInfo[i]); } } catch (InterruptedException e) { threadMessage("I wasn't done!"); } } } public static void main(String args[]) throws InterruptedException { //Delay, in milliseconds before we interrupt MessageLoop //thread (default one hour). long patience = 1000 * 60 * 60; //If command line argument present, gives patience in seconds. if (args.length > 0) { try { patience = Long.parseLong(args[0]) * 1000; } catch (NumberFormatException e) { System.err.println("Argument must be an integer."); System.exit(1); } } threadMessage("Starting MessageLoop thread"); long startTime = System.currentTimeMillis(); Thread t = new Thread(new MessageLoop()); t.start(); threadMessage("Waiting for MessageLoop thread to finish"); //loop until MessageLoop thread exits while (t.isAlive()) { threadMessage("Still waiting..."); //Wait maximum of 1 second for MessageLoop thread to //finish. /*******LOOK HERE**********************/ Thread.sleep(1000);//issues caution unlike t.join(1000) /**************************************/ if (((System.currentTimeMillis() - startTime) > patience) && t.isAlive()) { threadMessage("Tired of waiting!"); t.interrupt(); //Shouldn't be long now -- wait indefinitely t.join(); } } threadMessage("Finally!"); } } As i understand it, join waits for the other thread to complete, but in this case, arent both sleep and join doing the same thing? Then why does netbeans throw the caution?

Search Results

Search found 32961 results on 1319 pages for 'java'.

Page 873/1319 | < Previous Page | 869 870 871 872 873 874 875 876 877 878 879 880 | Next Page >

- by mabuzer

- by Dhruv Gairola

- by Risser

- by ganuke

- by reto

- by Anarchist

- by Param-Ganak

- by Vitalii Fedorenko

- by ducdeeze

- by Mickey

- by jm04469

- by DarkGlobe

- by Sandeep Bansal

- by Dean J

- by gmunk

- by javaguy

- by hhafez

- by elec

- by Willi Schönborn

- by shikarishambu

- by Kim Jong Woo

- by gleery

- by Paul Whelan

- by Ashish Pancholi

- by senzacionale

< Previous Page | 869 870 871 872 873 874 875 876 877 878 879 880 | Next Page >