JavaFX Classes

The Customer Example

def customer = Customer {
     firstName: "John";
     lastName: "Doe";
     phoneNum: "(408) 555-1212"
     address: Address {
          street: "1 Main Street";
          city: "Santa Clara";
          state: "CA";
          zip: "95050";
     }
}

customer.printName();
customer.printPhoneNum();
customer.printAddress();

class Address {
     var street: String;
     var city: String;
     var state: String;
     var zip: String;
}

class Customer {
     var firstName: String;
     var lastName: String;
     var phoneNum: String;
     var address: Address;

    function printName() {
        println("Name: {firstName} {lastName}");
    }

    function printPhoneNum(){
        println("Phone: {phoneNum}");
    }

    function printAddress(){
        println("Street: {address.street}");
        println("City: {address.city}");
        println("State: {address.state}");
        println("Zip: {address.zip}");
    }
}

Inheriting from Other Class
他のクラスを継承する

abstract class Account {

     var accountNum: Integer;
     var balance: Number;

     function getBalance(): Number {
          return balance;
     }

     function deposit(amount: Number): Void {
          balance += amount;
     }

     function withdraw(amount: Number): Void {
          balance -= amount;
     }
}

ここの abstract は、Account objects は直接作成できないことを意味している
Account を継承したクラスは次のようになる

class SavingsAccount extends Account {

     var minBalance = 100.00;
     var penalty = 5.00;

     function checkMinBalance() : Void {
          if(balance < minBalance){
               balance -= penalty;
          }
     }
}

この場合、Account の変数と関数はそのまま保持されて、新たに minBalance と　penalty 変数と checkMinBalance 関数が追加されている

Account の関数を上書きするには override を使う

class CheckingAccount extends Account {

  var hasOverDraftProtection: Boolean;

  override function withdraw(amount: Number) : Void {
    if(balance-amount<0 and hasOverDraftProtection){

    // code to borrow money from an 
    // overdraft account would go here

    } else {
      balance -= amount; 
      // may result in negative account balance!
    }
  }
}