Hard
An interface can contain :
Author: Eric HostaleryStatus: PublishedQuestion passed 1429 times
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Ahmed
08/12/2024
sauf erreur, en java,Une interface peut contenir des méthodes public (par défaut) et private (depuis Java 9) et tous les champs sont public static final par défaut. J'ai coché les 3 premiers mais il m'affiche reponse partiellement correcte
4
Which design pattern allows to dynamically add responsibilities to an object?4
Is the following code valid?
class Person {
constructor(name, age) {
this.name = name;
this.age = age;
}
}
const person = new Person('John', 20);
console.log(person.name);
console.log(person.age);5
Is the following code valid?
class Person {
constructor(name, age) {
this.name = name;
this.age = age;
}
}
const person = new Person('John', 20);
console.log(person.name);
console.log(person.age);8
Can we extend an abstract class in Java?4
Can an interface inherit from another interface?9
You need to develop a class for which there should be only one instance throughout your application. Which design pattern should you use for this?14
Is the following code valid?
class Person {
constructor(name, age) {
this.name = name;
this.age = age;
}
}
const person = new Person('John', 20);
console.log(person.name);
console.log(person.age);