代做JAVA编程、代写JAVA程序、代写JAVA、代写java报告

日期：2018-09-04 03:11

Important

Before beginning any work, do a Team...Pull in your repository.

Lab

? In this lab you must create and code a simple program that prints nutrtional information about

food. You have done similar activities in studio.

Review or reference the studio exercises as necessary.

? Code is distributed to you throughout the semester, so you may need to update your repository to

see the files for this lab:

? In the package explorer, right- (control-) clock on your project name, choose Team…Pull,

and supply your credentials.

? In the labs source folder you should see a lab1 package.

? Find and open the lab1 package in the labs source folder.

Nutrition Analyzer

In this lab you develop a simple tool that prints nutrition information about food. This lab is based on what you learned in

studio. By completing this lab you demonstrate that you can:

? Create a Java class on your own

? Arrange for the class to take inputs of interest

? Compute output values of interest

? Produce meaningful output based on your computations

Procedure

1. Create a Nutrition Java class in the lab1 package of the labs source folder.

The lab1 class is currently empty, but don't let that bother you. Right (control) click on lab1

and create a new class called Nutrition.

2. Arrange for your program to accept the following inputs:

name

The name of this food, provided as a String

carbs

The number of grams of carbohydrates in this food

fat

The number of grams of fat in this food

protein

The number of grams of protein in this food

statedCals

The number of calories stated on this food's label

For example, the values for a Snicker bar are:

name Snickers

carbs 34.5

fat 13.6

protein 4.3

statedCals 271

At this point, you should be thinking about the data types you would use to represent each of

the above items. We tell you that the name is a String, but what about the other inputs?

The above example is provided to inspire your thinking.

To accept the inputs, use the same code we used in studio. Just after the main method

declaration, you should have the line:

ArgsProcessor ap = new ArgsProcessor(args);

This will likely show an error because eclipse doesn't know about ArgsProcessor. Do you

remember how to fix this? Ask if you need help.

After that, you should initialize your inputs using code modeled after the code you read and

wrote in studio.

Eclipse will help you out here: If you have typed ap. and pause, eclipse will show you the

possible ways of continuing. For example, nextInt(String) is one way to keep going. That

call will prompt the user for an int displaying the provided String as the prompting message.

3. Arrange for your program to produce output such as the following:

Snickers has

34.5 grams of carbohydrates = 138.0 Calories

13.6 grams of fat = 122.4 Calories

4.3 grams of protein = 17.2 Calories

This food is said to have 271 (available) Calories.

With 6.6 unavailable Calories, this food has 1.65 grams of fiber

Approximately

50.9% of your food is carbohydrates

45.2% of your food is fat

6.3% of your food is protein

This food is acceptable for a low-carb diet? false

This food is acceptable for a low-fat diet? false

By coin flip, you should eat this food? true

Notes:

? There are 4 Calories in a gram of carbohydrates or protein.

? There are 9 Calories in a gram of fat.

? The stated caloric content of some foods may be less than the value you obtain by adding the calories

due to carbohydrates, fat, and protein. This is because some of the carbohydrates may be dietary fiber,

and as such they are unavailable for your body to use as energy.

In the above example, based on carbohydrates, fat, and protein, the food contains

277.6 Calories. However, the label claims a modest 271 Calories. Thus, 6.6 Calories

are unavailable and are attributed to dietary fiber.

From this we can compute 6.6 / 4 = 1.65 grams of the stated carbohydrates are

fiber.

? The percentages shown in the output above feature at most a single digit of precision after the decimal

point.

You must arrange for your percentages to exactly this precise. This will take some

thought, but it can be done using what is taught in the book: int operations, double

operations, casting, and Math.round(…).

You are not allowed to use printf or other functions you may find

that would accomplish this task. You have to figure out how to do it

using what you have learned in this module.

? The following are taken from this online resource :

? A food is a low-carb food if no more than 25% of its calories come from carbohydrates.

? A food is a low-fat food if no more than 15% of its calories come from fat.

For the output lines whose conclusions are true or false, define an appropriately

named boolean variable in your program and set it equal to the expression that

determines its value.

When you print the value it will print as true or false.

? To accomplish the coin flip, recall the random-number generator as described in the text. Define a

boolean heads and assign its value by comparing a random number with 0.5.

? Your strings can include the character sequences \t and \n, which have the effect of inserting a tab and

a newline, respectively. A tab will cause the output to shift right to a predetermined position. A newline will

end the current line of output and begin a new line.

4. To demo your lab, find some food labels (for real or on the web) and run your program with the appropriate

values for those foods.

What went wrong? (not required, for your amusement only)

I know of a person who took Chemistry and learned that a calorie of energy is required to raise the temperature of a gram

of water 1 degree Centigrade.

This gave him the idea that he could lose a lot of weight by drinking ice water, as follows. His body would be called upon to

raise the temperature of that cold water to 98.6 degrees Fahrenheit. So if the water starts at 40 degrees Fahrenheit, then

his body must raise each gram of that water about almost 60 degrees Fahrenheit, or about 33 degrees Centigrade.

A gram of water is a mL in volume. Thus, each liter of water should cause the body to expend 33,000 Calories. There are

about 3,500 Calories in a pound of fat, so drinking the liter of water should cause about 10 pounds of fat to burn.

This person tried this but did not notice much fat loss at all. Can you explain the epic fail here?

Submitting your work (read carefully)

? You must commit and push all of your work to your repository. It's best to do this from the top-most level of your

repository, which bears your name and student ID.

? You must demo the commited work to a TA. Make sure the TA knows that your demo is for credit at this point.

? Follow the directions below to have your demo for this work recorded.

Last modified 08:24:20 CDT 23 August 2018

When you are done with this lab, you must be cleared by the TA to receive credit.

? Do a Team…Pull to update your repository. You must do this or the commit/push below may fail.

? Commit and push all your work to your repository.

Make certain this has worked by logging into bitbucket. There you will see the

commit(s) in your news feed if it was successful. You can also check the

Source page to locate and ensure your code was received.

It is your responsibility to make certain the code has been pushed. Some

of your work receives credit through testing of your pushed code. You will

receive no credit for such work if you failed to push. We generally reserve the

right to revoke credit for any of your work that has not been pushed on-time.

? Fill in the form below with the relevant information

? Have a TA check your work

? The TA should check your work and then fill in the TA's name

? Click OK while the TA watches

? If you request propagation, it does not happen immediately, but should be posted in the next day

or so

This demo box is for lab 1

Last name WUSTL Key Propagate?

(NOT your numeric ID) Do not propagate lower case only

e.g. Smith j.smith

1

Acknowledgements and assertion of integrity

You must select one of the options below

The work submitted here was performed in accordance with this course's policy on

collaboration.

On your honor, you have neither given nor received any unauthorized aid on this

assignment.

However, the following TAs, students, or professors were supportive in completing this

assignment.

Their help was also in accordance with course policies.

Thanks to (leave blank if appropriate):

None

In spite of seeking help as allowable by this course's policy on collaboration, you were

unable to complete this assignment. No credit will be received for this assignment.

You would like to be contacted by an instructor to facilitate staying on track in this course.

Comments about this: None

You have NOT abided by this course's policy on collaboration. No credit will be received for

this assignment, but by checking this box, no academic integrity violation will be filed for this

assignment.

You would like to be contacted by an intructor to faciliate staying on track in this course.

Comments about this: None

TAs double check!

? This demo box is for lab 1

? The student has committed and pushed the work, and verified that it appears at

bitbucket.

TA: Password:

OK (click only after the work has been committed and pushed)