// Insect. Class
Package test;Class insect {
Int I = 9;
Int H = Y1;
Static int Y1 = 8;
Int J; Insect (){
PRT ("I =" + I + ", j =" + J );
J = 39;
} Static int X1 = PRT ("static insect. X1 initialized "); Static int PRT (string s ){
System. Out. println (s );
Return 47;
}
} // Beetle. Class
Public class beetle extends insect {
Int K = PRT ("beetle. K initialized "); Beetle (){
PRT ("k =" + k );
PRT ("J =" + J );
} Static int X2 = PRT ("static beetle. X2 initialized "); Public static void main (string [] ARGs ){
PRT ("beetle constructor ");
Beetle B = new beetle (); }
}
/* 1. First, try to access beetle. Main (). This is a static method.
* 2. Go outside and find the code beetle. Class compiled for the beetle class.
* 3. Beetle is found to have a base class during beetle. class loading.
* 4. Initialize base class
* 1) initialize static
* 2) initialize common variables in the text order.
* 5. Initialize a derived class
* 1) initialize static
* 2) initialize common variables in the text order.
* 6. Execute the main program in main (in the text order)
* 1) PRT ("beetle constructor ");
* 2) instantiate a derived class (beetle B = new beetle ();)
* 1) base class Constructor
* 2) constructor of the derived class
*
* Test site: static variable initialization and access; use of Constructors
**/ |
