Question

The goal of this assignment is to practice one dimensional arrays.

Objective: The goal of this assignment is to practice one-dimensional arrays. Background: A local FedEx ship center needs support to compute volume of the packages that are delivered on each day Assignment: The shipping center manages deliveries of each day in a single text file. Each text file contains exactly three lines. Each line contains n double numbers representing a dimension of n boxes. The first line represents the length, the second line represents the width, and the third line represents the height of each of the boxes. That is, each column represents the length, width, and height of a box The sample content of a file representing five packages to be delivered on a day: 2.00 10.00 8.00 8.00 2.00 4.50 8.45 1.20 3.00 3.50 8.00 2.50 4.00 1.00 1.5 The length, width, and height of the first box in the sample input file are 2.00, 4.50, and 8.00; the length, width, and height of the second box in the input file are 10.00, 8.45, and 2.50; so and so forth. The name of the input file is always info.txt Your program must output the following information on the terminal/console. Display the volume of each of the boxes. Display total volume of all the boxes Display the length, width, height, and volume of the largest box (that is the box with the largest volume). Display the length, width, height, and volume of the smallest box (that is the box with the smallest volume). . . . You must write four methods, one for each of the four tasks above. Requirements: You will write a program FedEx.java. You must use a one-dimensional array of double content to store information provided in each line of the input file. The program must contain a method to perform each of the four tasks listed (in bullet points) above. Each of the methods must have exactly three parameters: three one-dimensional a transfer the input data to the method. rrays to Deliverables: You are expected to submit one Java file (FedEx.java) using Blackboard. You must demo your program within one week after the due date. Your demo will be based on your last submission in the Blackboard. Your TA will instruct you with further details.

Answer 1

************************FedEx.java***********************************

package fedex;

import java.io.BufferedReader;

import java.io.FileReader;

/**

* The FedEx class contains the processing logic of different boxes dimensions provided in info.txt file.

*/

public class FedEx {

private double[] lengthList;

private double[] widthList;

private double[] heightList;

private int size;

private double minLength;

private double maxLength;

private double minWidth;

private double maxWidth;

private double minHeight;

private double maxHeight;

private double minVolume;

private double maxVolume;

/**

* Display volume of each boxes.

* This function first call the calculate volume method to calculate volume of each boxes

* and print the resultant volumes.

*

* @throws Exception the exception

*/

public void displayVolumeOfEachBoxes() throws Exception {

double[] calculatedVolumes = calculateVolume();

System.out.println("**************Volumes of each boxes are:*******************");

for (double vol : calculatedVolumes) {

System.out.println(vol);

}

}

/**

* Display total volumes of boxes.

* This function first call the calculate volume method to calculate volume of each boxes

* and do the sum of resultant volumes and print the results.

*

* @throws Exception the exception

*/

public void displayTotalVolumesOfBoxes() throws Exception {

double[] calculatedVolumes = calculateVolume();

double totalVolume = 0.0;

for (double vol : calculatedVolumes) {

totalVolume += vol;

}

System.out.println("******************Total volume of boxes is **************************");

System.out.println(totalVolume);

}

/**

* Display smallest dimension and volume.

* This function first call the calculate volume method to calculate volume of each boxes and

* prints the Length, Height, Width and Volume of smallest box.

*

* @throws Exception the exception

*/

public void displaySmallestDimensionAndVolume() throws Exception {

calculateVolume();

System.out.println(

"***********************Length, Height, Width and Volume of smallest box is****************************");

System.out.println("Length: " + minLength);

System.out.println("Height: " + minHeight);

System.out.println("Width: " + minWidth);

System.out.println("Volume: " + minVolume);

}

/**

* Display largest dimension and volume.

* This function first call the calculate volume method to calculate volume of each boxes and

* prints the Length, Height, Width and Volume of largest box.

*

* @throws Exception the exception

*/

public void displayLargestDimensionAndVolume() throws Exception {

calculateVolume();

System.out.println(

"***********************Length, Height, Width and Volume of largest box is****************************");

System.out.println("Length: " + maxLength);

System.out.println("Height: " + maxHeight);

System.out.println("Width: " + maxWidth);

System.out.println("Volume: " + maxVolume);

}

/**

* Calculate volume and check the min & max of the dimensions.

*

* @return the double[]

* @throws Exception the exception

*/

private double[] calculateVolume() throws Exception {

processInfoFile();

double[] volumeList = new double[size];

for (int i = 0; i < size; i++) {

double length = lengthList[i];

double width = widthList[i];

double height = heightList[i];

double volume = length * width * height;

volumeList[i] = volume;

checkForMinOrMax(length, width, height, volume);

}

return volumeList;

}

/**

* Check for min or max of dimensions.

*

* @param length the length

* @param width the width

* @param height the height

* @param volume the volume

*/

private void checkForMinOrMax(double length, double width, double height, double volume) {

if (this.minLength == 0.0 && this.maxLength == 0.0 && this.maxHeight == 0.0 && this.minHeight == 0.0

&& this.minWidth == 0.0 && this.maxWidth == 0.0 && this.minVolume == 0.0 && this.maxVolume == 0.0) {

this.minLength = length;

this.maxLength = length;

this.minWidth = width;

this.maxWidth = width;

this.minHeight = height;

this.maxHeight = height;

this.minVolume = volume;

this.maxVolume = volume;

} else {

if (length < this.minLength) {

this.minLength = length;

}

if (length > this.maxLength) {

this.maxLength = length;

}

if (width < this.minWidth) {

this.minWidth = width;

}

if (width > this.maxWidth) {

this.maxWidth = width;

}

if (height < this.minHeight) {

this.minHeight = height;

}

if (height > this.maxHeight) {

this.maxHeight = height;

}

if (volume < this.minVolume) {

this.minVolume = volume;

}

if (volume > this.maxVolume) {

this.maxVolume = volume;

}

}

}

/**

* Process info file.

* This function is used to splits the info.txt file data into it respective length, width and height list.

*

* @throws Exception the exception

*/

private void processInfoFile() throws Exception {

String[] dimensions = readFile();

String[] lengths = dimensions[0].split(" ");

String[] widths = dimensions[1].split(" ");

String[] heights = dimensions[2].split(" ");

this.lengthList = processDimensions(lengths);

this.widthList = processDimensions(widths);

this.heightList = processDimensions(heights);

this.size = lengths.length;

}

/**

* Process dimensions.

*

* @param dimensionAtr the dimension atr

* @return the double[]

*/

private double[] processDimensions(String[] dimensionAtr) {

double[] processedDimensions = new double[dimensionAtr.length];

int index = 0;

for (String atr : dimensionAtr) {

processedDimensions[index++] = Double.valueOf(atr);

}

return processedDimensions;

}

/**

* Read file.

* This function is used to process the info.txt file and return the array of data.

*

* @return the string[]

* @throws Exception the exception

*/

private String[] readFile() throws Exception {

BufferedReader br = null;

FileReader fr = null;

String[] dimensions = new String[3];

try {

fr = new FileReader("info.txt");

br = new BufferedReader(fr);

String line = null;

int i = 0;

while ((line = br.readLine()) != null) {

dimensions[i++] = line;

}

} catch (Exception ex) {

throw new Exception("info.txt file not found", ex);

} finally {

if (fr != null) {

fr.close();

}

if (br != null) {

br.close();

}

}

return dimensions;

}

}

************************************************TestFedEx.java********************************

package fedex;

// this is test class for FedEx

public class TestFedEx {

public static void main(String[] args) throws Exception {

FedEx fedEx = new FedEx();

fedEx.displayVolumeOfEachBoxes();

fedEx.displayTotalVolumesOfBoxes();

fedEx.displaySmallestDimensionAndVolume();

fedEx.displayLargestDimensionAndVolume();

}

}

*******************************Sample info.txt file******************************************

2.00 10.00 8.00 8.00 2.00

4.50 8.45 1.20 3.00 3.50

8.00 2.50 4.00 1.00 1.5

***********************Sample Output**********************************

<terminated> TestFedEx [Java Application] C:\Program FilesVava\jre1.8.0_121binavaw.exe (Jan 26, 2018, 1:25:11 AM 72.0 211.25 38.4 24.0 10.5 356.15 ****************Length, Height, Width and Volume of smallest box is**************************** Length: 2.0 Height: 1.0 Width: 1.2 Volume: 10.5 ****************Length, Height, Width and Volume of largest box is**************************** Length: 10.0 Height: 8.0 Width: 8.45 Volume: 211.25

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