Is this JWhiz thread question wrong?
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A) It is the thread from which other "child" threads will be spawned.
B) It must be the last thread to finish execution. When the main thread stops, the program terminates.
C) It has the highest priority.
D) main is not a thread.
Answer: A, B
I knew answer A but then I was lost. Why must the main thread be the last thread to finish execution? I thought unless a spawned thread was set as a Daemon thread, that the main thread could terminate but any other spawned threads could keep going?
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JavaBeginnersFaq
"Yesterday is history, tomorrow is a mystery, and today is a gift; that's why they call it the present." Eleanor Roosevelt
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Rob
Rob
SCJP 1.4
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Younes
By constantly trying one ends up succeeding. Thus: the more one fails the more one has a chance to succeed.
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JavaBeginnersFaq
"Yesterday is history, tomorrow is a mystery, and today is a gift; that's why they call it the present." Eleanor Roosevelt
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This is the output from your code
in main
in new Thread
Does it mean that the main thread had died? Why?
If you change your code to this.
Here is the output:
in main
in main
in main
in new Thread// this is line 674 of the output
in main
in main
in main
in main
There is something that I must have not catch, because I don't understand your conclusion.
Do you have an url where it is explained???
Again thx a lot
Younes
By constantly trying one ends up succeeding. Thus: the more one fails the more one has a chance to succeed.
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Originally posted by Younes Essouabni:
I am not sure of that. Can a spawned thread die after the main. I don't think it. Could you please explain with some code???
Yes.
Rob
Rob
SCJP 1.4
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Originally posted by Younes Essouabni:
I am not sure of that. Can a spawned thread die after the main. I don't think it. Could you please explain with some code???
A spawned thread may die before or after the main thread. They are independent. The program goes on until the last non-daemon thread is finished, regardless whether it is the main thread or a spawned thread.
JavaBeginnersFaq
"Yesterday is history, tomorrow is a mystery, and today is a gift; that's why they call it the present." Eleanor Roosevelt
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Younes
By constantly trying one ends up succeeding. Thus: the more one fails the more one has a chance to succeed.
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