useconstruct.java

来自「这是一张java应用教程的随书光盘」· Java 代码 · 共 32 行

class Mydata {
	private int day;
	private int month;
	private int year;
	public Mydata(){
		day = 12;
		month = 12;
		year = 1986;
	}
		public Mydata(int y){
		day = 1;
		month = 05;
		year = y;
	}
	public Mydata(int d,int m,int y){
		day = d;
		month = m;
		year = y;
	}
	public void display(){
		System.out.println(day + "-" + month + "-" + year);	
	}
	public static void main(String args[]){
		Mydata m1 = new Mydata();
		Mydata m2 = new Mydata(2000);
		Mydata m3 = new Mydata(1,01,2005);
		m1.display();
		m2.display();
		m3.display();
	}
}