CODEWITHSUNDEEP
java
user1887420
user1887420

Reputation: 11

Invoking a method in all class's objects simultaneously in java

I have a problem in java programming , how can i make all objects of a class invoke a method of themselves simultaneously in java ?

thank in advance.

Upvotes: 0

Views: 129

Answers (2)

gaborsch
gaborsch

Reputation: 15758

Here is an example code for what I understood of your question:

public class Flip {

    private static List<Flip> instances = new ArrayList<Flip>();

    [... fields, etc]

    public Flip() {
         [...init the fields]
         synchronized(instances) {
             // if you access the instances list, you have to protect it
             instances.add(this); // save this instance to the list
         }
    }

    [... methods]

    public void calculate() {
        synchronized(instances) {
            // if you access the instances list, you have to protect it
            for (Flip flip : instances) {
                // call the doCalculate() for each Flip instance
                flip.doCalculate();
            }
        }
    }

    private void doCalculate() {
       [... here comes the original calculation logic]
    }
}

The key point is that you have to register all instances of Flip somehow. Later on you can iterate them through.

Upvotes: 0

imrichardcole
imrichardcole

Reputation: 4675

From what I understand of your question, why don't you keep all instances of the class in a collection and then iterate over them and invoke the method you wish on all of them?

Upvotes: 1

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