7. Multiple classes in one java file

• Two classes declared within a single file:

  
      // file LineItem.java
      import java.text.NumberFormat;
  
      public class LineItem
      {
          private Product product;
          private int quantity;
          private double total;
          //...
      }//class LineItem
  
      class Product
      {
          //...
      }//class Product
  
  

  The generated class files are:

      LineItem.class
      Product.class