class Heater {

int power = 0;
int steam = 0;

void changePower(int newValue) {
power = newValue;
}

void changeSteam(int newValue) {
steam = newValue;
}

void printStates() {
System.out.println("power:"+power+" steam:"+steam);
}
}

class Heater1 {
public static void main(String[] args) {

//create two heaters
Heater heat1 = new Heater();
Heater heat2 = new Heater();

//methods for the two heaters
heat1.changePower(3);
heat1.changeSteam(20);
heat1.printStates();

heat2.changePower(1);
heat2.changeSteam(3);
heat2.printStates();

}
}