// Example of using a Cleaner in Java
import java.lang.ref.Cleaner;
public class Resource implements AutoCloseable {
private static final Cleaner cleaner = Cleaner.create();
private final Cleaner.Cleanable cleanable;
public Resource() {
cleanable = cleaner.register(this, new StateRestorer());
}
private class StateRestorer implements Runnable {
public void run() {
System.out.println("Restoring state...");
// Code to restore state or clean up resources
}
}
@Override
public void close() {
cleanable.clean();
System.out.println("Resource closed.");
}
public static void main(String[] args) {
try (Resource resource = new Resource()) {
// Use the resource
}
}
}
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