//abc.java -- @CopyLeft by tsaiwn@csie.nctu.edu.tw
//please compare to abc.cpp
import static java.lang.System.*;
class Dog {
  public
   Dog() {  wet=38; printf("Wan wan! "); }  // constructor
  protected int wet;  // so that can be used in GueiDog
  static void printf(String f, Object... p){ out.printf(f, p); }
};  // do NOT forget the ";"
class GueiDog extends Dog {   // Inheritance
   public GueiDog( ) { wet=49; printf("貴賓狗! "); } // constructor

};  // do NOT forget the ";"

class abc{
 public static void main(String xx[ ]) {
     Dog x = new Dog( );  Dog  x2;  // note that Java has no pointer
     x.printf("x.wet = " + x.wet +"\n");
     x.printf("\nHa ha ha 來個 GueiDog:\n");
     GueiDog y = new GueiDog( );
     x.printf("y.wet = " + y.wet + "\n");
     y.printf( "------now do x2 = new Dog( ) \n" );
     x2 = new Dog( );  // 這時才生出 Dog
 }//main(
} // class
/*************8

D:\COURSE\CS001\talk>javac abc.java

D:\COURSE\CS001\talk>java abc
Wan wan! x.wet = 38

Ha ha ha 來個 GueiDog:
Wan wan! 貴賓狗! y.wet = 49
------now do x2 = new Dog( )
Wan wan!
D:\COURSE\CS001\talk>

*****************************************************/
/******************************************************** C++ version
D:\COURSE\OOP> g++ abc.cpp

D:\COURSE\OOP> a.exe
Wan wan! x.wet = 38
Ha ha ha 來個 GueiDog:
Wan wan! 貴賓狗! y.wet = 49
------
Wan wan!
D:\COURSE\CS001\talk>
*******************************************/