What method is invoked to cause an object to begin executing as a separate thread?

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The start() method of the Thread class is invoked to cause an object to begin executing as a separate thread.

In Core Java, the method that is invoked to cause an object to begin executing as a separate thread is the start() method. The start() method is defined in the Thread class, and when called on an instance of a class that extends Thread or implements the Runnable interface, it initiates the execution of the thread.

Here’s a brief example using the Thread class:

java
class MyThread extends Thread {
public void run() {
// Code to be executed in the separate thread
}
}

public class Main {
public static void main(String[] args) {
MyThread myThread = new MyThread();
myThread.start(); // This invokes the start() method and starts the separate thread
}
}

Alternatively, you can use the Runnable interface and create a Thread object with a Runnable target:

java
class MyRunnable implements Runnable {
public void run() {
// Code to be executed in the separate thread
}
}

public class Main {
public static void main(String[] args) {
Thread myThread = new Thread(new MyRunnable());
myThread.start(); // This invokes the start() method and starts the separate thread
}
}

In both cases, calling the start() method is essential to initiate the execution of the thread.