Comment on Tutorial - Transient vs Volatile modifiers in Java By Reema sen
Comment Added by : it career
Comment Added at : 2010-02-24 00:13:50
Comment on Tutorial : Transient vs Volatile modifiers in Java By Reema sen
If you are working with the multi-threaded programming, the volatile keyword will be more useful. When multiple threads using the same variable, each thread will have its own copy of the local cache for that variable. So, when it's updating the value, it is actually updated in the local cache not in the main variable memory. The other thread which is using the same variable doesn't know anything about the values changed by the another thread. To avoid this problem, if you declare a variable as volatile, then it will not be stored in the local cache. Whenever thread are updating the values, it is updated to the main memory. So, other threads can access the updated value.
package javabeat.samples;
class ExampleThread extends Thread {
private volatile int testValue;
public ExampleThread(String str){
super(str);
}
public void run() {
for (int i = 0; i < 3; i++) {
try {
System.out.println(getName() + " : "+i);
if (getName().equals("Thread 1 "))
{
testValue = 10;
}
if (getName().equals("Thread 2 "))
{
System.out.println( "Test Value : " + testValue);
}
Thread.sleep(1000);
} catch (InterruptedException exception) {
exception.printStackTrace();
}
}
}
}
public class VolatileExample {
public static void main(String args[]) {
new ExampleThread("Thread 1 ").start();
new ExampleThread("Thread 2 ").start();
}
}
Not Working i tried it... but
---------- run java ----------
Thread 1 : 0
Thread 2 : 0
Test Value : 0
Thread 2 : 1
Test Value : 0
Thread 1 : 1
Thread 1 : 2
Thread 2 : 2
Test Value : 0
Output completed (3 sec consumed)
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Archived Comments
1. its great!!!!
View Tutorial By: safrgdg at 2015-02-12 10:10:07
2. i know this example this is in mg.hill but i want
View Tutorial By: srikanta at 2009-11-18 00:06:57
3. Thnaks a lot. Deep in brief.
View Tutorial By: Thanks at 2012-05-23 03:36:37
4. Nice one.your example proves that if you are apply
View Tutorial By: Nisarg pathak at 2015-09-30 17:23:37
5. thnkss buddyy its very helpful for my assignmentss
View Tutorial By: yamini at 2011-02-25 21:01:23
6. nice article... got th topic clearly
View Tutorial By: praba at 2011-05-09 23:29:26
7. This is the helpful Site for beginner....!!!!!!!!!
View Tutorial By: Anup at 2013-07-26 13:40:49
8. Excellent Example...... To understand the concept
View Tutorial By: SUNNY at 2009-02-24 23:41:04
9. Hi Paul,
It is a very interesting and help
View Tutorial By: Therese at 2010-04-28 05:36:09
10. i apprciate your work,plz keep on working harder a
View Tutorial By: Raymond B. Benedicto at 2013-01-12 07:08:59