count.java

来自「一个J2SE的简单入门」· Java 代码 · 共 28 行

class Count 
{
private int sum;
    public static int counter = 0;//定义public的static变量counter
    public int Count()
    {
         counter++;
         sum = counter;
         return sum;
     }
             
}

public class CountTest
{
	public static void main(String args[])
	{
	Count c=new Count();
	c.Count();
	System.out.println("****************");
	System.out.println("程序的运行结果是：");
	System.out.println(c.Count());//在类的外部通过类名直接调用
	System.out.println("****************");
	System.out.println("直接通过类名来调用属性：");
	System.out.println(Count.counter);
	}
}