Worksheet:
Tracing OOP in Python

public class BankAccount

{

private int dollars;

private int cents;

public BankAccount( int initialDollars, int initialCents ) {

dollars = initialDollars;

cents = initialCents;

}

public int getDollars() {

return dollars;

}

public int getCents() {

return cents;

}

public double getBalance() {

return dollars + cents/100.0;

}

public void setDollars( int updatedDollars ) {

dollars = updatedDollars;

}

public void setCents( int updatedCents ) {

cents = updatedCents;

}

public static void main( String[] args ) {

new BankAccount( 10000, 8 );

BankAccount checkingAccount = new BankAccount( 1837, 21 );

System.out.println(checkingAccount.getBalance() );

checkingAccount.setDollars( checkingAccount.getDollars() * 10 );

}

}

public class Flower {

private int numPetals;

private boolean wilted;

public Flower( int petals ) {

this.numPetals = petals;

this.wilted = false;

}

public int getNumPetals() {

return numPetals;

}

public boolean isWilted() {

return wilted;

}

public void dropPetal() {

if (getNumPetals() > 0) {

numPetals -= 1;

}

}

public void wilt() {

wilted = true;

}

public String toString() {

String baseRep = "A flower with " + Integer.toString(getNumPetals())

+ " petals that is ";

if (isWilted())

return baseRep + "wilted :(";

else

return baseRep + "not wilted!";

}

public static void main( String[] args ) {

new Flower( 10 );

Flower buttercup = new Flower( 5 );

Flower iris = new Flower( 3 );

System.out.println( buttercup );

System.out.println( iris );

for (int i = 0; i < 4; i++ ) {

buttercup.dropPetal();

iris.dropPetal();

}

System.out.println( buttercup );

System.out.println( iris );

iris.wilt();

System.out.println( iris );

}

}