referencevar.java

来自「这是清华大学编写的JAVA教材中所有题目的源代码！」· Java 代码 · 共 46 行

class MyDate
{
 	int day;
    int month;
    int year;

 	public MyDate(int d, int m, int y) 
 	{
 		day=d; 
 		month=m; 
 		year=y; 
 	}

    public void printDate()
 	{
 	 	System.out.println(year+"/"+month+"/"+day);
 	}
}

class TestMyDate
{
 	public static void main(String[] args)
 	{
 	 	int x=7;
		int y=x;
		x=2;
		System.out.println("x="+x);
		System.out.println("y="+y);
		System.out.println();
		/*
 	 	MyDate s=new MyDate(22,7,1964);
 	 	MyDate t=s;
 	 	s.printDate();
 	 	t.year=2004;t.month=3;t.day=15;
 	 	s.printDate();
 	 	*/
 	 	
 	 	MyDate s=new MyDate(22,7,1964);
 	 	MyDate t=new MyDate(22,7,1964);
 	 	s.printDate();
 	 	t.year=2004;t.month=3;t.day=15;
 	 	s.printDate();
		
 	}
}