Write a program that accepts a file name from command line, then initializes an array with test data using that text file as an input. The file should contain floating point numbers (use double data type). The program should also have the following methods: * getTotal. This method should accept a one-dimensional array as its argument and return the total of the values in the array. * getAverage. This method should accept a one-dimensional array as its argument and return the average of the values in the array. * getHighest. This method should accept a one-dimensional array as its argument and return the highest value in the array. * getLowest. This method should accept a one-dimensional array as its argument and return the lowest value in the array. double_input1.txt double_input2.txt Test Case 1 Command Line arguments: double_input1.txt Total: -1,813.080\n Average: -18.131\n Highest: 985.007\n Lowest: -989.128\n Test Case 2 Command Line arguments: double_input2.txt Total: -331,368.178\n Average: -165.684\n Highest: 9,994.439\n Lowest: -9,988.269\n Test Case 3 Command Line arguments: double_input3.txt File: double_input3.txt does not exist.\n Test Case 4 Usage: java ArrayOperations \n

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Java Program

Lab #2. Chapter 7. PC #11. Array Operations (Page 491)

Write a program that accepts a file name from command line, then initializes an array with test data using that text file as an input. The file should contain floating point numbers (use double data type). The program should also have the following methods:

* getTotal. This method should accept a one-dimensional array as its argument and return the total of the values in the array.

* getAverage. This method should accept a one-dimensional array as its argument and return the average of the values in the array.

* getHighest. This method should accept a one-dimensional array as its argument and return the highest value in the array.

* getLowest. This method should accept a one-dimensional array as its argument and return the lowest value in the array.

double_input1.txt double_input2.txt

Test Case 1

Command Line arguments:

double_input1.txt

Total: -1,813.080\n
Average: -18.131\n
Highest: 985.007\n
Lowest: -989.128\n

Test Case 2

Command Line arguments:

double_input2.txt

Total: -331,368.178\n
Average: -165.684\n
Highest: 9,994.439\n
Lowest: -9,988.269\n

Test Case 3

Command Line arguments:

double_input3.txt

File: double_input3.txt does not exist.\n

Test Case 4

Usage: java ArrayOperations <filename>\n

5009.080090
4828.594369
411.259878
-9785.626617
-4609.476471
2719.918173
7138.901501
-3538.371855
2574.392712
-3297.930547
8398.465389
-3195.768547
-6157.859188
-370.717511
-294.048307
-8513.062201
-5510.607699
-1041.978813
9293.313108
-5017.205842
361.703495
-6699.960064
-9232.366356
1447.159382
-8435.569795
-2030.469644
5002.575706
-5820.459615
7003.075309
3755.916188
▬▬▬▬▬▬▬▬▬▬▬▬▬▬
T▬▬▬▬▬▬▬
double_input2.txt ✓
1

283.760
-456.167
19.815
-322.301
344.949
-850.533
-672.360
-188.767
646.462
-118.775
808.613
-746.865
-370.432
219.607
-166.298
-508.636
-989.128
-205.020
-928.165
-180.699
300.753
316.036
709.371
-886.860
-585.388
-554.302
-394.801
-970.233
905.941
787.854
double_input1 (1).txt
1

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