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MindTapV2.0 for Farrell's Java Programming with 2021 Updates, 9th Edition [Instant Access], 1 term
9th Edition
ISBN: 9780357505540
Author: Farrell; Joyce
Publisher: Cengage Learning US
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Chapter 1, Problem 2PE
Explanation of Solution
Naming conventions:
It is the set of rules used for choosing the character sequence of identifier name. The naming conventions denote variables, methods, classes, and constants.
Naming conventions for method name:
- Naming conventions for method are:
- If the name of the method consists of multiple words, join them into one.
- Make the first letter as lowercase and capitalize the first letter of each sub word.
- Examples: “numberOfPassmarks”, “calculateMarks()”, etc.
| Method Identifiers | a | b | c | ||
| Legal | Conventional | Legal | Unconventional | Illegal | |
| associationRules() | Yes | Yes | |||
| void() | Yes, the method identifier is illegal, since “void” is keyword | ||||
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QUESTION 11
Given the following method header
public void someMethod ( float x, boolean y, boolean z)
what is the signature of this method?
For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).
1. Create a program class, TestFrame, that contains a main() to test and use the above class. This process should contain methods as follows:
main(): This method should:
1. Call makeFrame() to get the inputs and create a Frame object.
2. Call calcCost() to determine the cost of the picture.
3. Display the cost of the picture along with the attribute values.
4. Ask the user if he/she wants another picture.
5. If the answer is No, display the total cost of the picture
6. If the answer is Yes, implement steps 1 and 2 again (without a loop), then display:
● the number of frames created (through a variable)
• total cost of the picture(s), and
• average picture cost.
6. The program should then end.
Class methods: makeFrame() A function to prompt the user for inputs and accept the four (4) input values needed to create an instance of a
Frame. It instantiates a Frame object and returns the object to the calling method.
follows:
calcCost() This function has a Frame object as its formal argument…
Objective:
Write a class that will test dates and times inputted by the user and determine whether or not it is valid. This will focus on the usages of methods to organize code.
First download the driver and put it in your project
DO NOT ALTER THE DRIVER!
Use this to run your project
The driver :
public class DateAndTimeDriver { public static void main(String[] args) { // TODO Auto-generated method stub DateAndTimeTester dtTester = new DateAndTimeTester(); dtTester.run(); } }
Write a class file called DateAndTimeTester
This DOES NOT have a main method
Create the following methods
run: This method returns nothing and takes no parameters. This is called by the driver and should handle all of the input from the Scanner and dialog for the user.
isValid: returns true or false if a given String has the correct date and time. The String parameter should be formatted “MM/DD hh:mm” This method should call the methods isValidDate and isValidTime to determine this.
isValidDate: returns…
Chapter 1 Solutions
MindTapV2.0 for Farrell's Java Programming with 2021 Updates, 9th Edition [Instant Access], 1 term
Ch. 1 - Prob. 1RQCh. 1 - Prob. 2RQCh. 1 - Prob. 3RQCh. 1 - Prob. 4RQCh. 1 - Prob. 5RQCh. 1 - Prob. 6RQCh. 1 - Prob. 7RQCh. 1 - Prob. 8RQCh. 1 - Prob. 9RQCh. 1 - Prob. 10RQ
Ch. 1 - Prob. 11RQCh. 1 - Prob. 12RQCh. 1 - Prob. 13RQCh. 1 - Prob. 14RQCh. 1 - Prob. 15RQCh. 1 - Prob. 16RQCh. 1 - Prob. 17RQCh. 1 - Prob. 18RQCh. 1 - Prob. 19RQCh. 1 - Prob. 20RQCh. 1 - Prob. 1PECh. 1 - Prob. 2PECh. 1 - Prob. 3PECh. 1 - Prob. 4PECh. 1 - Prob. 5PECh. 1 - Prob. 6PECh. 1 - Prob. 7PECh. 1 - Prob. 8PECh. 1 - Prob. 9PECh. 1 - Prob. 10PECh. 1 - Prob. 11PECh. 1 - Prob. 12PECh. 1 - Prob. 1DECh. 1 - Prob. 1GZCh. 1 - Prob. 1CPCh. 1 - Prob. 2CP
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