//StaticDemo.Java
public class StaticDemo
{
   //成員變量
        static int a;
   //成員方法
   public int getA()
   {
                return a;
   }
   //構造方法
   StaticDemo (int a)
   {
                this.a = a;
   }
   //main方法
   public static void main(String args[])
   {
         StaticDemo.a = 5;
         StaticDemo.a ++;
         System.out.println("靜態成員變量："+ StaticDemo.a);
         StaticDemo one=new StaticDemo(9);
         System.out.println("靜態成員變量："+ StaticDemo.a);
         System.out.println("靜態成員變量："+ one.a);
         StaticDemo two=new StaticDemo(19);
         StaticDemo.a ++;
         System.out.println("靜態成員變量："+ StaticDemo.a);
         System.out.println("靜態成員變量："+ one.a);
         System.out.println("靜態成員變量："+ two.a);
   }
}