loancalculatortest.java

还不错的java基本实例

import javax.swing.JOptionPane;
import java.text.*;
public class LoanCalculatorTest {
     public static void main(String[] args) {
         double aloanAmount, monthlyPayment, totalPayment ;
         LoanCalculator aLoanCalculator=new LoanCalculator();
         aLoanCalculator.setLoanAmount(20000.0);
         aLoanCalculator.setLoanPeriod(12);
         aLoanCalculator.setAnnualInterestRate(7.0);
          monthlyPayment=aLoanCalculator.computeMonthlyPayment();
          totalPayment=aLoanCalculator.computeTotalPayment();
          aloanAmount=aLoanCalculator.getLoanAmount();
         NumberFormat currencyformatter=NumberFormat.getCurrencyInstance();
          String output="贷款金额：  "+currencyformatter.format(aloanAmount)+"\n"+
                   "贷款周期： "+aLoanCalculator.getLoanPeriod()+"\n"+
                  "年利率： "+aLoanCalculator.getAnnualInterestRate()+"%"+"\n"+
                  "月付款： "+currencyformatter.format(monthlyPayment)+"\n"+
                  "总付款： "+ currencyformatter.format(totalPayment)+"\n";
          JOptionPane.showMessageDialog( null,output,
                  "结果",+JOptionPane.INFORMATION_MESSAGE);
          System.exit(0);
}
}