while循环

Author: mthli

Part3/Retirement.java

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+import java.util.*;
+
+public class Retirement {
+ public static void main(String[] args) {
+ Scanner in = new Scanner(System.in);
+
+ System.out.print("How much money do you need to retire? ");
+ double goal = in.nextDouble();
+
+ System.out.print("How much money will you contribute every year? ");
+ double payment = in.nextDouble();
+
+ System.out.print("Interest rate in %: ");
+ double interestRate = in.nextDouble();
+
+ double balance = 0;
+ int years = 0;
+
+ while (balance < goal) {
+ balance += payment;
+ double intrest = balance * interestRate / 100;
+ balance += intrest;
+ years++;
+ }
+
+ System.out.println("You can retire in " + years + " years.");
+ }
+}
+