جافا Java
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Fix the error in the following Java code snippet to correctly calculate the factorial of a number using recursion.

public int factorial(int n) {
if (n == 1)
return 1;
else
return n * factorial(n - 1);
}



أصلح الخطأ في الشفرة البرمجية جافا التالية لحساب عامل رقم باستخدام العودية بشكل صحيح.
What is the base class of all classes in Java?
Anonymous Quiz
54%
Main
32%
Object
12%
Class
2%
System
What is the output of the following Java code snippet demonstrating the use of a for-each loop?

int[] numbers = {1, 2, 3, 4, 5};
for(int num : numbers) {
System.out.print(num + " ");
}



ما هو مخرج الشفرة البرمجية جافا التالية التي توضح استخدام حلقة for-each؟
Which of these is the correct way to define a constructor that takes a string and an integer as arguments in a class named `Person` in Java?
Anonymous Quiz
60%
Person(String name, int age) {}
21%
void Person(String name, int age) {}
11%
new Person(String name, int age) {}
7%
Person(String name; int age) {}
👍2
What will be the output of the following Java code snippet demonstrating the use of abstract classes?

abstract class Shape {
abstract void draw();
}
class Rectangle extends Shape {
void draw() {
System.out.println("Drawing Rectangle");
}
}
public class Test {
public static void main(String[] args) {
Shape shape = new Rectangle();
shape.draw();
}
}



ماذا سيكون المخرج للشفرة البرمجية جافا التالية التي توضح استخدام الصفوف المجردة؟
اكتب البرنامج
👍1
In Java, which keyword is used to inherit properties and methods from another class?
Anonymous Quiz
76%
extends
9%
implements
9%
inherits
6%
super
What will be the output of the following Java program that demonstrates the concept of inheritance?

class Animal {
String sound() { return "Some sound"; }
}
class Dog extends Animal {
String sound() { return "Bark"; }
}
public class TestInheritance {
public static void main(String[] args) {
Animal myDog = new Dog();
System.out.println(myDog.sound());
}
}



ماذا سيكون المخرج للبرنامج جافا التالي الذي يوضح مفهوم الوراثة؟
جافا Java
اكتب البرنامج
اكتب البرنامج
للمزيد
1👍1🎉1
How do you declare a method that does not return any value?
Anonymous Quiz
71%
void methodName() {}
15%
public methodName() {}
3%
methodType methodName() {}
11%
None of the above
👍1
Correct the error in the following Java code snippet that defines a method to calculate the sum of two integers.

public int sum(int a, int b) {
return a + b
}



صحح الخطأ في الشفرة البرمجية جافا التالية التي تعرف طريقة لحساب مجموع عددين صحيحين.
What keyword is used to import a package in Java?
Anonymous Quiz
27%
package
63%
import
8%
include
2%
use
1
Fix the error in the following code snippet that defines a class and tries to create an object of it.

public class Bike {
int speedLimit = 90;
}
public class TestBike {
public static void main(String[] args) {
Bike myBike = new Bike();
System.out.println(myBike.speedLimit);
}
}



صحح الخطأ في الشفرة البرمجية التالية التي تعرف صفا وتحاول إنشاء كائن منه.
1
What will be the output of the following Java code snippet that uses a switch-case statement?

char grade = 'A';
switch(grade) {
case 'A':
System.out.println("Excellent");
break;
case 'B':
System.out.println("Good");
break;
default:
System.out.println("Invalid grade");
}



ماذا سيكون المخرج للشفرة البرمجية جافا التالية التي تستخدم جملة switch-case؟
Which of the following is not a principle of Object-Oriented Programming?
Anonymous Quiz
14%
Encapsulation
9%
Inheritance
69%
Compilation
7%
Polymorphism
What is the output of the following Java code snippet that demonstrates the concept of inheritance and method overriding?

class Animal {
String shout() { return "Don't know!"; }
}
class Dog extends Animal {
String shout() { return "Woof!"; }
}
public class TestAnimal {
public static void main(String[] args) {
Animal myAnimal = new Dog();
System.out.println(myAnimal.shout());
}
}



ما هو مخرج الشفرة البرمجية جافا التالية التي توضح مفهوم الوراثة وإعادة تعريف الطريقة؟
👍1
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