Working with custom events

As a developer, you can also create your own custom events using the JFR API and view and analyze them using MC. Here's an example; let's define a custom event:

class MyEvent extends Event { 
   @Label("EventMessage") 
   String message; 
} 

Now let's modify the AThread class to use events, instead of printing to console:

class AThread implements Runnable { 
    String name = "default"; 
    private Random numGenerator = new Random(); 
    private ArrayList<Double> list = new ArrayList<Double>(1000000); 
 
    AThread(String name) { 
        this.name = name; 
    } 
 
    public void run() { 
        MyEvent event; 
        for (int i = 0; i < 1000000; i++) { 
            list.add(numGenerator.nextDouble()); 
            event = new MyEvent(); 
            event.message = "Allocated : " + name...