Page History

...

Code Block

bgColor	#FFCCCC

private class Account { 
  // Maintains all banking related data such as account balance
  private double balance = 100;

  boolean overdraft() {
    balance += 300;     // Add 300 in case there is an overdraft
    System.out.println("Added back-up amount. The balance is :" 
                       + balance);
    return true;
  }

  // other Account methods
}

public class BankAccount extends Account { 
  // Subclass handles authentication
  // NOTE: unchanged from previous version
  // NOTE: lacks override of overdraft method
}

public class Client {
  public static void main(String[] args) {
    Account account = new BankAccount();
    // Enforce security manager check
    boolean result = account.withdraw(200.0);   
    if (!result) {
      result = account.overdraft();
    }
    System.out.println("Withdrawal successful? " + result);
  }
}

...

<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="99d1a3e986639c46-5e2ca718-45b746e6-9b4db1b4-f0a5206f542e6ff18b401739"><ac:plain-text-body><![CDATA[	[[API 2006	AA. References#API 06]]	[Class `Calendar`	http://download.oracle.com/javase/6/docs/api/java/util/Calendar.html]	]]></ac:plain-text-body></ac:structured-macro>
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="a0142b0794a27c03-9e682e19-4afb4bb7-a2d1aeee-fdc4d2065fe9def6f2ab5977"><ac:plain-text-body><![CDATA[	[[Bloch 2008	AA. References#Bloch 08]]	Item 16. Favor composition over inheritance	]]></ac:plain-text-body></ac:structured-macro>
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="16258589683aedbb-b7d3ae90-4e6f486e-84b5b145-0ec6310344c2b787d46bc806"><ac:plain-text-body><![CDATA[	[[Gamma 1995	AA. References#Gamma 95]]	Design Patterns, Elements of Reusable Object-Oriented Software	]]></ac:plain-text-body></ac:structured-macro>
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="a59102b67cfe7262-d3976dc2-45014180-8a37a933-709a93688540cffa5368467d"><ac:plain-text-body><![CDATA[	[[Lieberman 1986	AA. References#Lieberman 86]]	Using prototypical objects to implement shared behavior in object-oriented systems	]]></ac:plain-text-body></ac:structured-macro>

...

Space shortcuts

Page tree

Versions Compared

Old Version 95

New Version 96

Key