Question
Please help with Java test questions, I will post the rest of the question in separate post. Question 11 Which of the following shows the
Please help with Java test questions, I will post the rest of the question in separate post.
Question 11
Which of the following shows the proper position of the synchronized keyword in a class declaration?
a. | public int calculate(int x) synchronized | |
b. | public int synchronized calculate(int x) | |
c. | public synchronized int calculate(int x) | |
d. | public int calculate(synchronized int x) |
Question 12
Which of the following situations would indicate that a method does not need to be synchronized?
a. | The method contains only a single Java statement. | |
b. | The method doesnt accept parameters. | |
c. | The method will never be called by more than one thread. | |
d. | The method doesnt have a return value. |
Question 13
Which of the following statements interrupts the current thread for one second?
a. | Thread.pause(1000); | |
b. | Thread.sleep(1000); | |
c. | Thread.wait(1000); | |
d. | Thread.yield(1000); |
Question 14
Which of the following statements is true?
a. | By default, all Java programs use at least two threads. | |
b. | On a computer with one CPU, threading enables the CPU to execute instructions for multiple threads simultaneously. | |
c. | On a computer with one CPU, threading enables the CPU to switch between multiple threads that are running. | |
d. | Threading lets you increase the speed at which the CPU can execute instructions. |
Question 15
Which of the following techniques can be used to create a thread?
a. | Implement the Runnable interface, then pass a reference to the object to the startThread method of the System class. | |
b. | Inherit the Object class, then pass a reference to the object to a constructor of the Thread class. | |
c. | Inherit the Thread class, then pass a reference to the thread object to the start method of an object that implements the Runnable interface. | |
d. | Implement the Runnable interface, then pass a reference to the object to a constructor of the Thread class. |
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