Account in Java Paint 2d Data Matrix barcode in Java Account

How to generate, print barcode using .NET, Java sdk library control with example project source code free download:
Account using java torender data matrix barcodes with web,windows application Microsoft SQL Server Customer owns name ssNo address phoneNumber setAddress LoanAccount loanAmount interestRate interestPaid computeInterest recordPayment Polymorphism Suppose th barcode data matrix for Java at we wish to know the current balance in our checking account, then the message to be used would be:. aCheckingA ccount.getCurrentBalance(). The messag Data Matrix ECC200 for Java e is sent to the checking account; but looking at Figure 2.13, we see that CheckingAccount does not have the speci ed method getCurrentBalance() and is unable to satisfy the request. In this case, CheckingAccount will look to its superclass, Account, for help.

CheckingAccount inherits the method getCurrentBalance() from its superclass, Account. Notice that the sender of the message, the client, does not know (or care) how the message request is satis ed. For example, when the message is sent to CheckingAccount, the sender is unaware that Account actually satis es the request.

Additionally, the sender does not know how the request is satis ed. In fact, the sender should not care who satis es the request or how the request is satis ed, only that it is accomplished. The sender need know only the name of the object, the method name, and required arguments.

The goal is to protect the data in an object from everything outside the object only the object s methods are allowed to access the object s data. The hiding of information from everything outside the object, and providing access only via methods, is called encapsulation (sometimes referred to as information hiding). Nothing outside the object should be aware of the object s internal structure or how its methods are implemented.

Outside the object, others only need to know the object s name, the method name, and the required parameters. In fact, one can think of this as the object s interface to the outside world. Consider the impact on maintenance that encapsulation provides.

If everything is hidden within an object, then the only place a change needs be made is inside the object nothing outside the object is affected unless the object interface changes (which, it never should!). For example, using our CNB example, we could add the attribute dateOpened to Account without affecting anything outside of the account class. We could also change the manner in which the current balance is stored, but nothing outside the account class would be affected.

. POLYMORPHISM Polymorphi Data Matrix for Java sm means that the same message can elicit a different response, depending on the receiver of the message. Using the CNB example, both. AN INTRODUCTION TO OBJECT-ORIENTED PROGRAMMING SavingsAcc ECC200 for Java ount and LoanAccount have methods called computeInterest().. Thus, we c ould send the following messages:. aSavingsAc Data Matrix for Java count.computeInterest() aLoanAccount.computeInterest().

The method name, computeInterest(), is the same, but the receiver of the message is different. Will both messages be handled the same way One would hope not! The savings account s interest is based on an average monthly balance and varies by current interest rates. A loan s interest is based on a xed interest rate (CNB does not have variable rate loans).

The procedure for calculating interest for a savings account is different from calculating interest for a loan. Thus, the receiver of the message SavingsAccount or LoanAccount determines how the message is satis ed. Remember, because of encapsulation, those outside the object do not know how the message is satis ed (the methods could be exactly the same we would not know!).

Polymorphism provides a very consistent and natural way to use messages without worrying about how or who satis es the message. A message is sent to an object and the object handles it. It is confusing to use speci c messages such as computeSavingsInterest() and computeLoanInterest(), when, in reality, they are both simply computeInterest().

. DYNAMIC BINDING What happe ns when you compile a COBOL program that has the following statement but in the data division, only X was de ned .
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