ملاحظة الشيت مكتوب ان الinterface مستحيل بكون لها تنفيذ في كلاس بس في اصدارات 8.9.
قعدت تنفذ جوا عادي. بواسطة 3طرق
1. private methods
2. keyword defult
2. static methods
قعدت تنفذ جوا عادي. بواسطة 3طرق
1. private methods
2. keyword defult
2. static methods
❤3
interface&&interface
علاقة وراثة
interface&®ular class
علاقة implementation
علاقة وراثة
interface&®ular class
علاقة implementation
❤5
Forwarded from S.O.P("قناة مناهج كلية تقنية المعلومات");
Method is overriden not the datamembers, so runtime polymorphism can be achieved by data members
Anonymous Quiz
53%
True
47%
False
public class Person {
String name;
int age;
public Person(String name, int age) {
this.name = name;
this.age = age;
}
public void displayInfo() {
System.out.println(name + " is " + age + " years old.");
}
public static void main(String[] args) {
Person person;
person.displayInfo();
}
}output??
public class Person {
String name;
int age;
public Person(String name, int age) {
this.name = name;
this.age = age;
}
public void displayInfo() {
System.out.println(name + " is " + age + " years old.");
}
public static void main(String[] args) {
Person person;
person. age=20;
person.displayInfo();
}
}❤1
public class Person {
String name;
int age;
Person (int y, String a){
age=y;
name=a;
}
public void displayInfo() {
System.out.println(name + " is " + age + " years old.");
}
public static void main(String[] args) {
Person person=new Person(20,"M");
Person p;
p=person;
p.displayInfo();
}
}👍4❤2
polymorphism in java is a concept by which we can perform a single action in different ways
Anonymous Quiz
86%
✅
14%
❌❌
the most common use of polymorphism in oop occurs when a parent class reference is used to refer a child class object
Anonymous Quiz
54%
upcasting
13%
Downcasting
14%
polymorphism
19%
A&&C
there are two types of polymorphism in java is
Anonymous Quiz
24%
override && overlloding
6%
upcasting&& Downcasting
38%
compile time polymorphism&&runtime polymorphism
32%
A&B