JAVA PROGRAM Chapter 7. PC #16. 2D Array Operations Write a program that creates a two-dimensional array initialized with test data. Use any primitive data type that you wish. The program should have the following methods: • getTotal. This method should accept a two-dimensional array as its argument and return the total of all the values in the array. • getAverage. This method should accept a two-dimensional array as its argument and return the average of all the values in the array. • getRowTotal. This method should accept a two-dimensional array as its first argument and an integer as its second argument. The second argument should be the subscript of a row in the array. The method should return the total of the values in the specified row. • getColumnTotal. This method should accept a two-dimensional array as its first argument and an integer as its second argument. The second argument should be the subscript of a column in the array. The method should return the total of the values in the specified column. • getHighestInRow. This method should accept a two-dimensional array as its first argument and an integer as its second argument. The second argument should be the subscript of a row in the array. The method should return the highest value in the specified row of the array. • getLowestInRow. This method should accept a two-dimensional array as its first argument and an integer as its second argument. The second argument should be the subscript of a row in the array. The method should return the lowest value in the specified row of the array. Demonstrate each of the methods in this program. The name of the file is read from command-line arguments: args[0]   Inpu11.txt 1 2 3 4 5 6 7 8 9   Input2.txt 555.66 333.44 123.45 778.88 900.00 123.12 234.23 567.98 12.12   Input3.txt 555.66 333.44 123.45 555.66 333.44 123.45 778.88 900.00 123.12 778.88 900.00 123.12 234.23 567.98 12.12 234.23 567.98 12.12   Input4.txt 555.66 333.44 123.45 778.88 900.00 123.12 234.23 567.98 12.12 555.66 333.44 123.45 778.88 900.00 123.12 234.23 567.98 12.12 555.66 333.44 123.45 778.88 900.00 123.12 234.23 567.98 12.12   Test Case 1       Command Line arguments:   input1.txt     Row 0 Subtotal: 6.000\n Row 1 Subtotal: 15.000\n Row 2 Subtotal: 24.000\n Column 0 Subtotal: 12.000\n Column 1 Subtotal: 15.000\n Column 2 Subtotal: 18.000\n Array Total: 45.000\n   Test Case 2       Command Line arguments:   input2.txt     Row 0 Subtotal: 1012.550\n Row 1 Subtotal: 1802.000\n Row 2 Subtotal: 814.330\n Column 0 Subtotal: 1568.770\n Column 1 Subtotal: 1801.420\n Column 2 Subtotal: 258.690\n Array Total: 3628.880\n   Test Case 3       Command Line arguments:   input3.txt     Row 0 Subtotal: 2025.100\n Row 1 Subtotal: 3604.000\n Row 2 Subtotal: 1628.660\n Column 0 Subtotal: 1568.770\n Column 1 Subtotal: 1801.420\n Column 2 Subtotal: 258.690\n Column 3 Subtotal: 1568.770\n Column 4 Subtotal: 1801.420\n Column 5 Subtotal: 258.690\n Array Total: 7257.760\n   Test Case 4       Command Line arguments:   input4.txt     Row 0 Subtotal: 1012.550\n Row 1 Subtotal: 1802.000\n Row 2 Subtotal: 814.330\n Row 3 Subtotal: 1012.550\n Row 4 Subtotal: 1802.000\n Row 5 Subtotal: 814.330\n Row 6 Subtotal: 1012.550\n Row 7 Subtotal: 1802.000\n Row 8 Subtotal: 814.330\n Column 0 Subtotal: 4706.310\n Column 1 Subtotal: 5404.260\n Column 2 Subtotal: 776.070\n Array Total: 10886.640\n

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Passing Array as Argument

An array is a data structure that holds only fixed-size data and its contents are arranged in contiguous memory slots. The primary purpose of using an array is to store data items of the identical type together. An array can stockpile any one of the following types of data: int, float, char and so forth. The elements are stored from index 0, and the difference between the two indexes of the array is termed as an offset. The array has a fixed size. Once the size is defined during array declaration, it cannot be changed later.