How is default new thread name given in java?

Question

When I run this program

public class Fabric extends Thread {
    public static void main(String[] args) {
        Thread t1 = new Thread(new Fabric());
              


        

Answer 1

new Thread(new Fabric());

Since Fabric is a Thread, you created 2 threads here :)

JDK8 code:

/* For autonumbering anonymous threads. */
private static int threadInitNumber;
private static synchronized int nextThreadNum() {
    return threadInitNumber++;
}