productlist.java

《java设计模式》一书的源码

import java.util.*;

public class productList extends JawtList
   implements visList
{
   public productList() {
      super(10);     //sets up JawtList  
   }
   //-------------------------------------
   private void splitAdd(String s) {
      
      //take each string apart and keep only
      //the product names, discarding the quntities

      int index = s.indexOf("--");  //separate qty from name
                  
      if(index > 0)
         super.add(s.substring(0, index));
      else
         super.add(s);
   }
   //-------------------------------------
   public void addLine(String s) {
 
      splitAdd(s);
      super.validate();
   }
   //-------------------------------------
   public void removeLine(int index) {
      String s = super.getElementAt(index);
      super.remove(s);
   }
}