quiz9_4.java

程序练习中包括书中实例程序代码和练习中要用到的代码,是压缩文件

interface Y {
   public void f();
}
abstract class Z {
   public abstract void g();
   public void h() {
      System.out.println( "Hello!" );
   }
}
public class Quiz9_4 {
   public static void main( String[] args ) {
/*    Object y = new Y() {
         public void f() {
            System.out.println( "Choice a)" );
         }
      }; */
/*    Z z = new Z() {
         public void g() {
            System.out.println( "Choice b)" );
         }
      }; */
/*    Object y = new Y, Z() {
         public void f() {
            System.out.println( "Choice c)" );
         }
         public void g() {
            System.out.println( "Choice c)" );
         }
      }; */
/*    Z z = new Z() {
         public void h() {
            System.out.println( "Choice d)" );
         }
      }; */
/*    Object z = new Z() {
        public void g() {
            System.out.println( "Choice e)" );
         }
         public void h() {
            System.out.println( "Choice e)" );
         }
      }; */
   }
}