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Select the correct answerWhat will be the output of the following Java code? class newthread extends Thread { Thread t; newthread() { t = new Thread(this,"New Thread"); t.start(); } public void run() { System.out.println(t.isAlive()); } } class Code_Tantra { public static void main(String args[]) { new newthread(); } }Optionstrue10false

Question

Select the correct answerWhat will be the output of the following Java code? class newthread extends Thread { Thread t; newthread() { t = new Thread(this,"New Thread"); t.start(); } public void run() { System.out.println(t.isAlive()); } } class Code_Tantra { public static void main(String args[]) { new newthread(); } }Optionstrue10false

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Solution

The output of the given Java code will be "true".

Here's the step by step explanation:

  1. In the main method, an object of the class newthread is created. This calls the constructor of the newthread class.

  2. In the constructor of the newthread class, a new Thread is created with 'this' as the target to run and "New Thread" as the name of the thread. The start() method is called on this thread which causes the run() method to be called in a separate concurrent thread.

  3. The run() method is overridden in the newthread class. Inside the run() method, it checks if the thread is alive by calling the isAlive() method on the thread.

  4. Since the thread was started and the isAlive() method is called within the run() method (which is executed in the thread), the thread is still alive at the time of the call. Hence, isAlive() returns true.

  5. The result "true" is then printed to the console.

This problem has been solved

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