تجمع شيتات واسئلة oop
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interface cannot be declared as private or protacted
Anonymous Quiz
83%
17%
مقارنة مهمة
مصطلح multiple inheriance
interface names may be adjectives or nouns
Anonymous Quiz
78%
22%
+ public
- private
# protacted
4
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();
}
}
👍42
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
انواع الpolymorphism
a process of converting one data type to another is known as Typercasting