Given: 1. public class TestOne implements Runnable { 2. public static void main (String[] args) throws Exception { 3. Thread t = new Thread(new TestOne()); 4. t.start(); 5. System.out.print("Started"); 6. t.join(); 7. System.out.print("Complete"); 8. } 9. public void run() { 10. for (int i = 0; i < 4; i++) { 11. System.out.print(i); 12. } 13. } 14. } What can be a result?

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  1. Compilation fails.

  2. An exception is thrown at runtime.

  3. The code executes and prints "StartedComplete"

  4. The code executes and prints "StartedComplete0123".

  5. The code executes and prints "Started0123Complete".

Show answer
Correct Option: E

AI Explanation

To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) Compilation fails - This option is incorrect because there are no syntax errors in the given code.

Option B) An exception is thrown at runtime - This option is incorrect because there are no exceptions thrown in the given code.

Option C) The code executes and prints "StartedComplete" - This option is incorrect because the code includes a call to t.join() on line 6, which means the program will wait for the thread t to complete before continuing. Therefore, the "Complete" message will only be printed after the thread has finished executing.

Option D) The code executes and prints "StartedComplete0123" - This option is incorrect because the "Complete" message will only be printed after the thread has finished executing, which means the numbers 0, 1, 2, and 3 will be printed before the "Complete" message.

Option E) The code executes and prints "Started0123Complete" - This option is correct. Here's the explanation:

  • The code starts a new thread t on line 4 and calls its run() method.
  • The run() method contains a for loop that prints the numbers 0, 1, 2, and 3.
  • After starting the thread, the code prints "Started" on line 5.
  • The t.join() method on line 6 makes the main thread wait for the t thread to complete before continuing.
  • After the t thread finishes executing, the main thread continues and prints "Complete" on line 7.

Therefore, the output of the code will be "Started0123Complete".

The correct answer is E.

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