java chapter07-1
package bank;public class Test {/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubint amount = 8000;ConstructionBank bank1 = new ConstructionBank();bank1.saveMoney = amount;bank1.year = 8.236;bank1.setInterestRate(0.035);double interest1 = bank1.computerInterest();BankOfDalian bank2 = new BankOfDalian();bank2.saveMoney = amount;bank2.year = 8.236;bank2.setInterestRate(0.036);double interest2 = bank2.computerInterest();System.out.printf("两个银行利息相差%f元\n",interest2 - interest1);}}