What functions should a class override that delegate tasks?.

// To delegate tasks to a delegate class, the following are needed:

// Interface describing the delegated methods
interface DelegatedTask {
    void performTask();
    String getData();
}

// Delegate class implementing the interface and providing method implementations
class TaskDelegate implements DelegatedTask {
    @Override
    public void performTask() {
        // Implementation of task execution
        System.out.println("Task is being performed by the delegate");
    }

    @Override
    public String getData() {
        // Implementation of data retrieval
        return "Data from delegate";
    }
}

// Class that delegates tasks
class TaskPerformer {
    private final DelegatedTask delegate; // Reference to the delegate

    // Constructor for injecting the delegate
    public TaskPerformer(DelegatedTask delegate) {
        this.delegate = delegate;
    }

    // Methods that are delegated
    public void executeTask() {
        delegate.performTask(); // Delegate task execution
    }

    public String retrieveData() {
        return delegate.getData(); // Delegate data retrieval
    }
}

Thus, the delegate class must override all methods declared in the interface that describes the delegated tasks. These methods serve as a contract for interaction between the class that delegates and the delegate class.