
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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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.
Test Case 1
double_input1.txt
Total: -1,813.080\n
Average: -18.131\n
Highest: 985.007\n
Lowest: -989.128\n
Average: -18.131\n
Highest: 985.007\n
Lowest: -989.128\n
Test Case 2
double_input2.txt
Total: -331,368.178\n
Average: -165.684\n
Highest: 9,994.439\n
Lowest: -9,988.269\n
Average: -165.684\n
Highest: 9,994.439\n
Lowest: -9,988.269\n
Test Case 3
double_input3.txt
File: double_input3.txt does not exist.\n
Test Case 4
Usage: java ArrayOperations <filename>\n

Transcribed Image Text: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
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double_input2.txt ✓
1

Transcribed Image Text: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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