Database System Concepts
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.
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
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 ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ T▬▬▬▬▬▬▬ 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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