THreads Problem Complex

[Mohit G Gupta]

public class Thr implements Runnable

{  
        String as="YEs";
        public void run()
        
        {
                this.as="NO";
		System.out.println(Thread.currentThread().getName()+"thread"+as);
	
	}
	
	public static void main(String arg[])
	{
		
		Thr abc=new Thr();
		new Thread(abc).start();
                for(int i=0;i<10;i++)
               { 
                 System.out.println(Thread.currentThread().getName()+""+abc.as);
               }
	}
}

Ist output:

mainYEs
mainNO
mainNO
mainNO
mainNO
mainNO
mainNO
mainNO
mainNO
mainNO
Thread-0threadNO

I understand the above output JVM first chooses main and then thread-0 and then again main but i cannot understand the second output

2nd output:

mainYEs
mainNO
mainNO
mainNO
mainNO
mainNO
mainNO
mainNO
mainNO
mainNO
Thread-0threadNO

It appears that JVM selects thread-0 but executes only first statement of run method of thread-0 without the second line of run and then then chooses main and after executing its println 10 times ,it returns back to thread-0

Queries:

q1.IIs my interpretation about second output correct??
q2.shouldn't there be Interrupted Exception in the second output??

------------------------------------------------------------------------------------------------------



i replaced the code with synchronized run method,still main thread is able to interrupt the thread-0

	public synchronized  void run()
        {
                this.as="NO";
		System.out.println(Thread.currentThread().getName()+"thread"+as);
	
	}

Third output:


mainYEs
mainNO
mainNO
Thread-0threadNO
mainNO
mainNO
mainNO
mainNO
mainNO
mainNO
mainNO

-----------------------------------------------------------------------------------------------------

then,i replaced it with the following code

        public  void run()
        {
          synchronized(Thr.class)
          {     
                this.as="NO";
		System.out.println(Thread.currentThread().getName()+"thread"+as);
           }
	 }

still,the same output


-------------------------------------------------------------------------------------------

Q3.how can i get the following output at all times..


Fourth output:

mainYEs
mainNO
mainNO
mainNO
mainNO
mainNO
mainNO
mainNO
mainNO
mainNO
Thread-0threadNO

[Tom Jarray]

public static void main(String arg[])
{

Thr abc=new Thr();
new Thread(abc).start();
for(int i=0;i<10;i++)
{
System.out.println(Thread.currentThread().getName()+""+abc.as);
}
try {
abc.join();
} catch (InterruptedException e) {

}
}

[Mohit G Gupta]

so,ranchers,moderators

can anyone answer my questions ?

q1.Is my interpretation about second output correct??
q2.shouldn't there be Interrupted Exception ??

and TOM please use tags

[Christophe Verré]

mohitkumar gupta wrote:so,moderators

Why moderators ? Every rancher has the right to answer.

[Mohit G Gupta]

sorry, i meant ranchers

[Bert Bates]

I for one would be more interested in looking at your questions if you bothered to format your code better

[Mohit G Gupta]

thanks Bert Bates for the advice
i have formatted the code .

[Mohit G Gupta]

please somebody reply
i have properly formatted the code

[Mohit G Gupta]

please somebody reply
i have properly formatted the code

[Christophe Verré]

EaseUp. There may be some reasons why nobody answers :

1. The code is unreadable.
2. We don't understand the question. 1st and 2nd Output are the same. Personally, I don't want to look further when I see two similar outputs, with one comment saying "I understand" and the second comment saying "Why"...
3. The post is too long. Ask one question first.
4. Nobody knows the answer.

[Abimaran Kugathasan]

Christophe Verré wrote:EaseUp. There may be some reasons why nobody answers :

1. The code is unreadable.
2. We don't understand the question. 1st and 2nd Output are the same. Personally, I don't want to look further when I see two similar outputs, with one comment saying "I understand" and the second comment saying "Why"...
3. The post is too long. Ask one question first.
4. Nobody knows the answer.

I repeat again this! I think, the reasons are 1,2 and 3.
The code is unreadable.
The post is too long. Ask one question first.
We don't understand the question. Mostly, you are fluctuating with your answers also!