usestaticmember.java

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// 程序：使用static关键字
// 范例文件：UseStaticMember.java

class StaticClass
{
   public static int i;           

   public static int addNumber(int i,int j)
   {
      return i+j;
   }
}

public class UseStaticMember
{
   public static void main(String args[])
   {
      StaticClass S1 = new StaticClass();  
      S1.i = S1.addNumber(10,20);         
      System.out.println("10+20=" + S1.i); 
   
      StaticClass.i = StaticClass.addNumber(30,40);
      System.out.println("30+40=" + StaticClass.i);     

      StaticClass S2 = new StaticClass();   
      System.out.println("StaticClass.i=" + S2.i); 
   }
}