Java 6 Illuminated: An Active Learning Approach: An Active Learning Approach (Jones and Barlett Illuminated) by Anderson Julie & Franceschi Herve J

Author:Anderson, Julie & Franceschi, Herve J. [Anderson, Julie]
Language: eng
Format: mobi
Publisher: Jones & Bartlett Learning
Published: 2008-02-11T16:00:00+00:00

EXAMPLE 9.5 Processing a Column in a Two-Dimensional Array

At line 17, we declare and initialize a single-dimensional String array named familyMembers to make our prompt more user-friendly. At lines 24-28, we again use a do/while loop to prompt the user for a valid family member index.

To calculate the maximum value of the family member cell bills, we first initialize the variable memberMaxBill to the first element in the column (familyCellBills[0][currentMember]) at line 30. We then use a standard for loop at lines 31-39, following the pattern described earlier to update the value of memberMaxBill as necessary. There is one minor difference; we do not need to start the row at index 0 because we initialized memberMaxBill to the value of the element in row 0 of the column currentMember. Note that we assume that there is an element at column 0 of each row, that is, each row has been instantiated. The value of the variable memberMaxBill is then formatted and printed at lines 41-44. Figure 9.8 shows the output of the program.

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