book3test.java

来自「关于java面向对象系统分析方面的课件」· Java 代码 · 共 33 行

package s2Java.sg.ch01.exercise;

class Book3{
	private String title;
	private int pageNum;
	private String type;
	public Book3(String title,int pageNum){
		this.title = title;
		this.pageNum = pageNum;
		this.type = "计算机";
	}
	public Book3(String title,int pageNum,String type){
		this.title = title;
		this.pageNum = pageNum;
		this.type = type;
	}
	public void detail(){
		System.out.println("书名："+title+",页数:"+pageNum+"，类型："+type);
	}
	
}
public class Book3Test {


	public static void main(String[] args) {
		Book3 b1 =  new Book3("Java入门",270);
		Book3 b2 =  new Book3("北京生活指南",570,"生活");
		b1.detail();
		b2.detail();
	}

}