Answer:
(1) manage the computer's resources, such as the central processing unit, memory, disk drives, and printers, (2) establish a user interface, and (3) execute and provide services for applications software.
This is about identifiers in a record referring to other records.
You can have many to one, one to one, many to many.
E.g., if you have two tables, Authors and Books, then a book record could have a reference to an author record. Since an author can write many books, this would be a many-to-one relationship.
Answer:
The code is given in the explanation section
Explanation:
//Class Airconditioner
public class AirConditioner {
private boolean turnOnOff;
//The Constructor
public AirConditioner(boolean turnOnOff) {
this.turnOnOff = turnOnOff;
}
//method turn_on
public void turn_on(){
this.turnOnOff = true;
}
//method turn_off
public void turn_off( ){
this.turnOnOff = false;
}
}
// A new class to test the airconditional class
class AircondionTest{
public static void main(String[] args) {
//Creating an object of the Aircondional class
AirConditioner office_a_c = new AirConditioner(false);
//Using the reference varible to call method turn_on
office_a_c.turn_on();
}
}
