public class InterestTable3
1:
2: /**
3: Displays a two-dimensional table showing how interest
4: rates affect bank balances.
5: */
6: public class InterestTable3
7: {
8: public static final int ROWS = 10;
9: public static final int COLUMNS = 6;
10:
11: public static void main(String[] args)
12: {
13: int[][] table = new int[ROWS][COLUMNS];
14: for (int row = 0; row < ROWS; row++)
15: for (int column = 0; column < COLUMNS; column++)
16: table[row][column] =
17: getBalance(1000.00, row + 1, (5 + 0.5*column));
18: System.out.println("Balances for Various Interest Rates");
19: System.out.println("Compounded Annually");
20: System.out.println("(Rounded to Whole Dollar Amounts)");
21: System.out.println( );
22: System.out.println("Years 5.00% 5.50% 6.00% 6.50% 7.00% 7.50%");
23: showTable(table);
24: }
25:
26: /**
27: The array anArray can have any values for its two dimensions.
28: Postcondition: The array contents are displayed with dollar signs.
29: */
30: public static void showTable(int[][] anArray)
31: {
32: for (int row = 0; row < anArray.length; row++)
33: {
34: System.out.print((row + 1) + " ");
35: for (int column = 0; column < anArray[row].length; column++)
36: System.out.print("$" + anArray[row][column] + " ");
37: System.out.println( );
38: }
39: }
40:
41: public static int getBalance(double startBalance, int years, double rate)
42: {
43: double runningBalance = startBalance;
44: for (int count = 1; count <= years; count++)
45: runningBalance = runningBalance*(1 + rate/100);
46: return (int)(Math.round(runningBalance));
47: }
48: }