Transaction class
This class handles the data and processes the logic of a transaction in the ITSO Bank application. A transaction can be either credit or debit type; that is why both inherit the transaction class structure. Example | 5 shows some of the relevant Java source code in simplified format of the Transaction class.
Example 8-5 Transaction class
package itso.rad75.bank.model;
public abstract class Transaction implements Serializable {
static int transactionCtr = 1; // to increment transactionId
public Transaction(BigDecimal amount) {
this.setTimeStamp(new Timestamp(System.currentTimeMillis()));
this.setAmount(amount);
this.setTransactionId(transactionCtr++);
}
public abstract String getTransactionType();
public abstract BigDecimal process(BigDecimal accountBalance)
throws InvalidTransactionException;
......
}
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