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Java private method for Java supersync

I have class A and B that inherit from Base.

The base has a private method. It is possible that A and B execute this method at the same time.

So, I want to synchronize this method. If I just put the “synchronize” keyword in the signature, will this make synchronization of A and B (sharing the same lock)? Or do I need to create a static lock object ...?

Sorry, a little confused ...

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4 answers

, , , , increment . getNewCounter. .

public class Base {
    private int counter;

    private void increment() {
        counter++;
    }
    protected int getNewCounter() {
        increment();
        return counter;
    }
}

public class A extends Base {
    public int aMethod() {
        return getNewCounter();
    }
}

public class B extends Base {
    public int anotherMethod() {
        return getNewCounter();
    }
}
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I know that private members are NOT inherited. Thus, class A and class B cannot access this private method using inheritance or creating an object of class Base to call this method until there is a public method in the base class that has access to this private method.

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