Java Thread Instantiation and Usage
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Questions and Answers

What is the correct way to execute a thread in Java?

  • By extending the Thread class
  • By calling the run() method directly
  • By calling the start() method (correct)
  • By creating a new instance of the Thread class

    • What happens when you call the start() method on a thread that has already been started?

  • The thread is terminated
  • A new thread is created
  • The thread is restarted
  • An IllegalThreadStateException is thrown (correct)

    • What is the default priority of a newly created thread in Java?

  • A random priority
  • The lowest priority possible
  • The highest priority possible
  • The same priority as the thread that created it (correct)

    • What is the primary thread that starts when a Java program is executed?

    <p>The main thread</p> Signup and view all the answers

    What is the purpose of the run() method in a Java thread?

    <p>To execute the thread's code</p> Signup and view all the answers

    What kind of scheduling algorithm is used in Java's runtime system?

    <p>Preemptive scheduling</p> Signup and view all the answers

    What is a consequence of a thread being unable to gain regular access to shared resources?

    <p>Thread starvation</p> Signup and view all the answers

    Which method of the Thread class is used to invoke the run() method?

    <p>start()</p> Signup and view all the answers

    How can a Java program be made to use threading?

    <p>By extending the Thread class</p> Signup and view all the answers

    What is the purpose of the setPriority() method in the Thread class?

    <p>To set the thread's priority</p> Signup and view all the answers

    What is the purpose of the join() method in the Thread class?

    <p>To wait for the thread to finish</p> Signup and view all the answers

    What is the name of the process in which each thread is given a period of time to run, and then all the other threads of equal priority get their turn at the CPU?

    <p>Time slicing</p> Signup and view all the answers

    What is the result of instantiating a Thread using the default constructor?

    <p>Thread-0</p> Signup and view all the answers

    Which Java Thread constructor allows you to specify the thread's name?

    <p>Thread(String name)</p> Signup and view all the answers

    What happens in the run() method of a Java Thread?

    <p>It carries out the thread's task.</p> Signup and view all the answers

    In which method do we usually call start() for a Java Thread object?

    <p>start()</p> Signup and view all the answers

    What is printed with the statement 'System.out.println( 'In run! ' );' in the MyThread class?

    <p>In run!</p> Signup and view all the answers

    What is the purpose of calling the start() method in a Java Thread?

    <p>To begin the execution of the thread</p> Signup and view all the answers

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