JAVA题库:格林模拟试题二(上)(7)

来源:java认证发布时间:2012-11-12 12:47:15java认证视频

 

question 22)

what can cause a thread to stop executing?

1) the program exits via a call to system.exit(0);
2) another thread is given a higher priority
3) a call to the thread's stop method.
4) a call to the halt method of the thread class

 


question 23)

for a class defined inside a method, what rule governs access to the variables of the enclosing method?

1) the class can access any variable
2) the class can only access static variables
3) the class can only access transient variables
4) the class can only access final variables


question 24)


under what circumstances might you use the yield method of the thread class

1) to call from the currently running thread to allow another thread of the same or higher priority to run
2) to call on a waiting thread to allow it to run
3) to allow a thread of higher priority to run
4) to call from the currently running thread with a parameter designating which thread should be allowed to run


question 25)

what will happen when you attempt to compile and run the following code

public class hope{
public static void main(string argv[]){
hope h = new hope();
}

protected hope(){
for(int i =0; i <10; i ++){
system.out.println(i);
}
}
}

1) compilation error: constructors cannot be declared protected
2) run time error: constructors cannot be declared protected
3) compilation and running with output 0 to 10
4) compilation and running with output 0 to 9

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