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class Car {
String licensePlate; // e.g. "New York 543 A23"
double speed; // in
kilometers per hour
double maxSpeed; // in kilometers per hour
}
Once you've constructed a car, you want to do something
with it. To access the fields of the car you use the .
separator. The Car class has three fields
licensePlate
speed
maxSpeed
Therefore if c is a Car object, c
has three fields as well:
c.licensePlate
c.speed
c.maxSpeed
You use these just like you'd use any other variables of
the same type. For instance:
Car c = new Car();
c.licensePlate = "New York A45 636";
c.speed = 70.0;
c.maxSpeed = 123.45;
System.out.println(c.licensePlate + " is moving at " + c.speed +
"kilometers per hour.");
The . separator selects a specific member of a
Car object by name. |