HR자바 Java Inheritance I

개요

HR자바 Java Inheritance I

• https://www.hackerrank.com/challenges/java-inheritance-1/problem

해커랭크 Java

#	문제	비고
HR자바 Object Oriented Programming e
43	HR자바 Java Inheritance I
44	HR자바 Java Inheritance II
45	HR자바 Java Abstract Class
46	HR자바 Java Interface
47	HR자바 Java Method Overriding
48	HR자바 Java Method Overriding 2 (Super Keyword)
49	HR자바 Java Instanceof keyword
50	HR자바 Java Iterator

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import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

class Animal {
    void walk() {
        System.out.println("I am walking");
    }
}

class Bird extends Animal {
    void fly() {
        System.out.println("I am flying");
    }
    void sing() {
        System.out.println("I am singing");
    }
}

public class Solution{
    public static void main(String args[]){

        Bird bird = new Bird();
        bird.walk();
        bird.fly();
        bird.sing();
    }
}