Java KeepAlive() function

java_keepalive.java

import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;

public class NativeMember {
    private static int staticCounter = 0;
    private static final AtomicIntegerFieldUpdater<NativeMember> updater = AtomicIntegerFieldUpdater.newUpdater(NativeMember.class, "counter");
    private volatile int counter = staticCounter;

    public void keepAlive() {
        updater.lazySet(this, counter + 1);
    }
}