Notes

• the finalize() method is called by the garbage collector before an object is reclaimed. It’s defined in the Object class and can be overriden to perform cleanup
• protected void finalize() throws Throwable
• rarely used in modern java as try catch is more preferrable
• deprecated in java 9 due to performance issues and unreliability.

class Resource {
    @Override
    protected void finalize() throws Throwable {
        System.out.println("Cleaning up resource");
        // Perform cleanup
        super.finalize();
    }
}

class Main {
    public static void main(String[] args) {
        Resource r = new Resource();
        r = null; // Eligible for GC
        System.gc(); // Suggests GC, may trigger finalize()
    }
}