childrenbook.java

CMS（内容管理系统）

package com.wrox.library;

public class ChildrenBook extends Book
{
	private int minimumAge;

	public int getMinimumAge() {
	  return minimumAge;
	}

	public void setMinimumAge(int a){
	  minimumAge = a;
	}
	public ChildrenBook(){
	  super();
	}
	public ChildrenBook(String title){
	  super(title);
	}
};