objectnumber.java

Java做的时钟

public class ObjectNumber
{private static int number=0;
public ObjectNumber()
	{
	number++;
	}
public void Print()
	{
	System.out.println(number);
	}
public static void main(String args[])
	{
	ObjectNumber a=new ObjectNumber();
	System.out.print("当前对象的个数为：");
	a.Print();
	ObjectNumber b=new ObjectNumber();
	System.out.print("当前对象的个数为：");
	b.Print();
	}
}