Is it possible to instantiate a class that contains only abstract methods?

In Java, you cannot instantiate (create an instance of) a class if it contains only abstract methods and is declared as an abstract class. An abstract class is a class that may contain abstract methods (without implementation), and it cannot be instantiated directly. To use such a class, you need to create a subclass that implements all abstract methods, and then this subclass can be instantiated.

Example:

abstract class Animal {
    abstract void makeSound();
}

// Not allowed: Animal a = new Animal(); // Compilation error

class Dog extends Animal {
    void makeSound() {
        System.out.println("Woof");
    }
}

Dog dog = new Dog(); // Allowed