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the most common use of polymorphism in oop occurs when a parent class reference is used to refer a child class object
polymorphism in java is a concept by which we can perform a single action in different ways
polymorphism in java a concept by which we can perform a single action in different way
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();
}
}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();
}
}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();
}
}Repost from قناة منهج كلية تقنية المعلومات |2005|
Method is overriden not the datamembers, so runtime polymorphism can be achieved by data members
class names are noun inheriance names may be adjectives or noun
