HR자바 Java Inheritance I 문서 원본 보기

==개요==
;HR자바 Java Inheritance I
* https://www.hackerrank.com/challenges/java-inheritance-1/problem

{{HR자바 헤더}}
{{HR자바 Object Oriented Programming}}
|}

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<syntaxhighlight lang='java'>
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");
    }
}
</syntaxhighlight>
<syntaxhighlight lang='java'>
class Bird extends Animal {
    void fly() {
        System.out.println("I am flying");
    }
    void sing() {
        System.out.println("I am singing");
    }
}
</syntaxhighlight>
<syntaxhighlight lang='java'>
public class Solution{
    public static void main(String args[]){

        Bird bird = new Bird();
        bird.walk();
        bird.fly();
        bird.sing();
    }
}
</syntaxhighlight>