银行利息 Q
Banking interest Q
我正在尝试编写一个程序来计算帐户的本金、利率和年限的复利。我正在尝试通过对话框来完成/如果原则留给累积,程序会在投资上输出 return。
我卡在了计算部分,请帮忙
package firstAssignment;
import java.util.Scanner;
import javax.swing.JOptionPane;
public class thinkingQuestion {
public static void main(String[] args) {
//Banking program that asks user for the amount of money they wish to invest in a
//compound interest account (principle), the interest rate (percent value) and the time frame (years).
Scanner in= new Scanner(System.in);
String principle, interestVal, years;
int newPrinciple,newYears;
double total;
principle=JOptionPane.showInputDialog("How much money would you like to invest?");
interestVal=JOptionPane.showInputDialog("What's the interest rate?");
years=JOptionPane.showInputDialog("How many years?");
//convert from String to integer
newPrinciple=Integer.parseInt(principle);
newYears=Integer.parseInt(years);
double newInterestVal=Integer.parseInt(interestVal);
total=JOptionPane.PLAIN_MESSAGE(newPrinciple*Math.pow(1+ newInterestVal, newYears), newYears);
我删除了您不需要的 somo 变量,我认为主要问题在于显示消息的 java 语法。在这里你可以看到一个教程:
https://docs.oracle.com/javase/tutorial/uiswing/components/dialog.html
import javax.swing.JOptionPane;
public class InterestBanking {
public static void main(String[] args) {
// Banking program that asks user for the amount of money they wish to
// invest in a
// compound interest account (principle), the interest rate (percent
// value) and the time frame (years).
String principle, interestVal, years;
float newPrinciple, newYears;
principle = JOptionPane.showInputDialog("How much money would you like to invest?");
interestVal = JOptionPane.showInputDialog("What's the interest rate?");
years = JOptionPane.showInputDialog("How many years?");
// convert from String to integer
newPrinciple = Float.parseFloat(principle);
newYears = Float.parseFloat(years);
double newInterestVal = Float.parseFloat(interestVal);
//You could change your calculation here if this isn't the need formula
double interest = newPrinciple * Math.pow(1 + newInterestVal, newYears);
//you were assigning the result to a total variable. That's not neccesary
JOptionPane.showMessageDialog(null, "Interest:" + NumberFormat.getCurrencyInstance(new Locale("en", "US")).format(interest) + " In years: " + newYears);
}
}
我正在尝试编写一个程序来计算帐户的本金、利率和年限的复利。我正在尝试通过对话框来完成/如果原则留给累积,程序会在投资上输出 return。
我卡在了计算部分,请帮忙
package firstAssignment;
import java.util.Scanner;
import javax.swing.JOptionPane;
public class thinkingQuestion {
public static void main(String[] args) {
//Banking program that asks user for the amount of money they wish to invest in a
//compound interest account (principle), the interest rate (percent value) and the time frame (years).
Scanner in= new Scanner(System.in);
String principle, interestVal, years;
int newPrinciple,newYears;
double total;
principle=JOptionPane.showInputDialog("How much money would you like to invest?");
interestVal=JOptionPane.showInputDialog("What's the interest rate?");
years=JOptionPane.showInputDialog("How many years?");
//convert from String to integer
newPrinciple=Integer.parseInt(principle);
newYears=Integer.parseInt(years);
double newInterestVal=Integer.parseInt(interestVal);
total=JOptionPane.PLAIN_MESSAGE(newPrinciple*Math.pow(1+ newInterestVal, newYears), newYears);
我删除了您不需要的 somo 变量,我认为主要问题在于显示消息的 java 语法。在这里你可以看到一个教程:
https://docs.oracle.com/javase/tutorial/uiswing/components/dialog.html
import javax.swing.JOptionPane;
public class InterestBanking {
public static void main(String[] args) {
// Banking program that asks user for the amount of money they wish to
// invest in a
// compound interest account (principle), the interest rate (percent
// value) and the time frame (years).
String principle, interestVal, years;
float newPrinciple, newYears;
principle = JOptionPane.showInputDialog("How much money would you like to invest?");
interestVal = JOptionPane.showInputDialog("What's the interest rate?");
years = JOptionPane.showInputDialog("How many years?");
// convert from String to integer
newPrinciple = Float.parseFloat(principle);
newYears = Float.parseFloat(years);
double newInterestVal = Float.parseFloat(interestVal);
//You could change your calculation here if this isn't the need formula
double interest = newPrinciple * Math.pow(1 + newInterestVal, newYears);
//you were assigning the result to a total variable. That's not neccesary
JOptionPane.showMessageDialog(null, "Interest:" + NumberFormat.getCurrencyInstance(new Locale("en", "US")).format(interest) + " In years: " + newYears);
}
}