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============================================================================
=



class AA
{
static String s = "KSC is cool!";
static int i = 0;
public AA(){
i++;
System.out.println("Now class AA is created.");
}
protected void aa(){
System.out.println("class AA is created automatically when class BB is
created");
}
}



public class BB extends AA
{
public BB(){
System.out.println("Now class BB is created!");
i++;
}
public static void main(String[] args){
System.out.println("Before = "+i);
BB b = new BB();
System.out.println("After = " +i);
System.out.println(s);
b.aa(); // class BBÀÇ reference(=Handle)·Î class AAÀÇ Method¸¦ ½ÇÇà.
}
}



°á°ú¹° :
"Before = 0
Now class AA is created.
Now class BB is created!
After = 2
KSC is cool!
class AA is created automatically when class BB is created"






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