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$10.00 Java Questions Need Response
- From Computer-Science: Object-Oriented-Programming , General-Questions: Technology
- Closed, but you can still post solutions
- Due on Jul. 18, 2008
- Asked on Jul 13, 2008 at 6:04:10PM
Q:1. (Refer to class diagram 6-1.) Declare the Account class and its instance variables. Then, code a constructor that assigns default values to these variables. The default value you assign to the customer variable should prevent a NullPointerException. Write this code as concisely as possible.
2. (Refer to class diagram 6-1.) Code a constructor for the Account class that assigns values to the instance variables based on the values that are passed to it. The parameters of this constructor should be given the same names as the instance variables.
3. (Refer to class diagram 6-1.) Code a constructor for the Account class that assigns values to the instance variables based on the values that are passed to it. The parameters of this constructor should be given the names n, c, t, and b respectively. Write this code as concisely as possible.
4. (Refer to class diagram 6-1.) Code a constructor for the Account class that assigns values to the number, type, and balance instance variables based on the values that are passed to it, and assigns a value to the customer instance variable by calling the getCustomer method. The parameters of this constructor should be given the same names as the instance variables. The getCustomer method should accept the number variable as a parameter and return a Customer object. Write this code as concisely as possible.
5. (Refer to class diagram 6-1.) Write the code for the getType method. This method should simply return the value of the type instance variable.
6. (Refer to class diagram 6-1.) Write the code for the setType method. This method should simply set the value of the type instance variable to the value that’s passed to it.
7. (Refer to class diagram 6-1.) Write the code for the getCustomerName method. This method should get a customer’s name from the customer instance variable by calling a method of the Customer class named getName that returns the name instance variable of the Customer object. Write this method as concisely as possible.
8. (Refer to class diagram 6-1.) Write the code for the getFormattedBalance method. This method should return the value of the balance instance variable formatted as currency with two decimal places.
9. (Refer to class diagram 6-1.) Write the code for the creditAccount and debitAccount methods. The creditAccount method should add the amount that’s passed to it to the balance instance variable, and the debitAccount method should subtract the amount that’s passed to it from the balance instance variable.
10. (Refer to class diagram 6-1.) Assume that the Account class includes an additional instance variable named lastTranDate. Write two methods that overload the creditAccount and debitAccount methods that accept and update this instance variable. (Hint: You can use a variable created from the Date class to store a date.)
11. (Refer to class diagram 6-1.) Given a constructor that accepts values for the number, type, and balance instance variables and assigns those values to the instance variables, code another constructor that calls this constructor and passes default values to it.
12. (Refer to class diagram 6-1.) Code a statement that creates an instance of the Account class using the constructor that doesn’t accept any parameters. Store the object that’s created in a variable named account.
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class diagram 6-1.gif (8K)
