Interview Questions: Multithreading-Part-1

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Q1: What is a thread in Java?

Answer: A thread in Java is the smallest unit of execution within a process. It is a lightweight sub-process that shares the same memory space as other threads in the same process. Threads allow multiple tasks to be executed concurrently, enhancing the application’s efficiency.

Q2: How can you create a thread in Java?

Answer: There are two ways to create a thread in Java:

1. By extending the Thread class.
2. By implementing the Runnable interface.

Creating thread by extending Thread class:

public class MyThread extends Thread {
    @Override
    public void run() {
        System.out.println("Hello this is inside MyThread's run method");
    }
}

public class Main {
    public static void main(String[] args) {
        Thread thread = new MyThread();
        thread.start();
    }
}

Creating thread by implementing Runnable interface:

class MyRunnable implements Runnable {
    @Override
    public void run() {
        System.out.println("Hello this is inside MyRunnable's run method");
    }
}

public class Main {
    public static void main(String[] args) {
        MyRunnable…