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代码功能：

给出本金，计算在不同的年复合利率下不同经过年数（期数）对应的本息和。

代码：

package v1ch03.CompoundInterest;/*** This program shows how to store tabular data in a 2D array.* @version 1.40 2004-02-10* @author Cay Horstmann*/
public class CompoundInterest
{public static void main(String[] args){final double STARTRATE = 10;final int NRATES = 6;final int NYEARS = 10;// set interest rates to 10 . . . 15%double[] interestRate = new double[NRATES];for (int j = 0; j < interestRate.length; j++)interestRate[j] = (STARTRATE + j) / 100.0;double[][] balances = new double[NYEARS][NRATES];// set initial balances to 10000for (int j = 0; j < balances[0].length; j++)balances[0][j] = 10000;// compute interest for future yearsfor (int i = 1; i < balances.length; i++){for (int j = 0; j < balances[i].length; j++){// get last year's balances from previous rowdouble oldBalance = balances[i - 1][j];// compute interestdouble interest = oldBalance * interestRate[j];// compute this year's balancesbalances[i][j] = oldBalance + interest;}}// print one row of interest ratesfor (int j = 0; j < interestRate.length; j++)System.out.printf("%9.0f%%", 100 * interestRate[j]);System.out.println();// print balance tablefor (double[] row : balances){// print table rowfor (double b : row)System.out.printf("%10.2f", b);System.out.println();}}
}

运行结果：

在Excel中绘制图表如下：