Main.java Source code

Introduction

Here is the source code for Main.java

Source

public class Main {
    public static void main(String[] args) {
        new Thread(Main::run).start();
        new Thread(Main::run).start();
    }

    public static void run() {
        int counter = 3;
        System.out.println(Thread.currentThread().getName() + "  generated counter:  " + counter);
        for (int i = 0; i < counter; i++) {
            CallTracker.call();
        }
    }
}

class CallTracker {
    private static ThreadLocal<Integer> threadLocal = new ThreadLocal<Integer>();

    public static void call() {
        int counter = 0;
        Integer counterObject = threadLocal.get();

        if (counterObject == null) {
            counter = 1;
        } else {
            counter = counterObject.intValue();
            counter++;
        }
        threadLocal.set(counter);
        String threadName = Thread.currentThread().getName();
        System.out.println("Call  counter for " + threadName + "  = " + counter);
    }
}