Which interface allows adding an object as a resource in a try block?

Interface AutoCloseable.

Objects implementing this interface can be used in the try-with-resources statement (try block) in Java.

// Example of using AutoCloseable
public class MyClosableResource implements AutoCloseable {

    @Override
    public void close() throws Exception {
        // Resource release logic
        System.out.println("Resource closed.");
    }

    public void doSomething() {
        System.out.println("Working with resource.");
    }
}

// Usage in try-with-resources
public class Example {
    public static void main(String[] args) {
        try (MyClosableResource resource = new MyClosableResource()) {
            resource.doSomething();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}