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Getter and Setter Methods. Setter methods public methods that set the value of instance variables to a value specified by the call to the argument Setter methods do not violate the idea of private data you only change the variables you want Returns void (i.e. nothing) Getter methods
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Getter and Setter Methods • Setter methods • public methods that set the value of instance variables to a value specified by the call to the argument • Setter methods do not violate the idea of private data • you only change the variables you want • Returns void (i.e. nothing) • Getter methods • public method that displays value of private variables • Again, does not violate idea of private data • You only display values you want to display • Also called “accessor” or “query” methods • Other objects can treat the object as a black box
class carSetter { private String licensePlate; private int speed; void setlicensePlate(String plate) //setter method { licensePlate = plate; } void setspeed(intispeed) //setter method { speed=ispeed; } }//end class
class carSetter { private String licensePlate; private int speed; void setlicensePlate(String plate) //setter method { licensePlate = plate; } void setspeed(int ispeed) //setter method { speed=ispeed; } String getlicensePlate() //getter method { return licensePlate; } int getspeed() //getter method { return speed; } }//end class
class getter_Example { public static void main(String args[]) { carSetter a = new carSetter(); a.setlicensePlate("02 C 14"); a.setspeed(10); System.out.println(a.getlicensePlate() + " is moving at " + a.getspeed() + " mph."); }//main }//
