Which of the following statements is false?
a. Thread synchronization is necessary only for shared mutable data, i.e., data that may change during its lifetime.
b. With shared immutable data that will not change, it’s not possible for a thread to see old or incorrect values as a result of another thread’s manipulation of that data.
c. When you share immutable data across threads, declare the corresponding data fields final to indicate that the values of the variables will not change after they’re initialized. This prevents accidental modification of the shared data, which could compromise thread safety.
d. Labeling object references as final indicates that the referenced object is immutable.
D
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Friendship cannot be declared between a class template and:
a. A class-template specialization. b. A member function of another class. c. Another class template. d. A global function.
Which of the following statements is true?
``` public class TestA { public static void main(String[] args) { int x = 2; int y = 20 int counter = 0; for (int j = y % x; j < 100; j += (y / x)) { counter++; } } } public class TestB { public static void main(String[] args) { int counter = 0; for (int j = 10; j > 0; --j) { ++counter; } } } ``` a. The value of counter will be different at the end of each for loop for each class. b. The value of j will be the same for each loop for all iterations c. Both (a) and (b) are true. d. Neither (a) nor (b) is true.
Which of the following is an advantage of implementing a queue using an array?
a. It is not restricted by a static size b. It is more efficient if the exact size of the input is known upfront c. It prioritizes the elements in the queue d. It does not have to keep a head and a tail pointer
A catch block consists of four different elements: the keyword catch, followed by parentheses that contain an exception type and identifier, statements that take action to handle the error condition, an endcatch statement, and a return statement.
Answer the following statement true (T) or false (F)