// 程序：多重構造函數
// 范例文件：MultiConstructor.java

public class MultiConstructor
{
   int a,b; 
 
   MultiConstructor()     
   {
      a=0;
      b=0;
   }

   MultiConstructor(int i)    
   {
      a=i;
      b=0;
   }

   MultiConstructor(int i,int j)
   {
      a=i;
      b=j;
   }
 
   public static void main(String args[])  
   {

      MultiConstructor instanceA = new MultiConstructor();
      MultiConstructor instanceB = new MultiConstructor(1);
      MultiConstructor instanceC = new MultiConstructor(1,2);

      System.out.println("instanceA==>a=" + instanceA.a + " b=" + instanceA.b);
      System.out.println("instanceB==>a=" + instanceB.a + " b=" + instanceB.b);
      System.out.println("instanceC==>a=" + instanceC.a + " b=" + instanceC.b);
   }
}