J250511/01-JavaSE阶段代码/J20250716/demo03_abstract/Penguin.java

package J20250716.demo03_abstract;

/**
 * @author WanJl
 * @version 1.0
 * @title Penguin
 * @description 企鹅
 * @create 2025/7/16
 */
public abstract class Penguin extends Bird{

}