package fulijisuanqi02; import java.text.DecimalFormat; import java.util.Scanner; public class fulijisuanqi02 { static Scanner scanner = new Scanner(System.in); static DecimalFormat df = new DecimalFormat("####0.0000"); public static void main(String[] args) { //TODO Auto-generated method stub System.out.println("1.复利计算;"); System.out.println("2.单利计算;"); System.out.println("3.本金计算;"); System.out.println("4.年限计算;"); System.out.println("5.报酬率计算;"); System.out.println("6.累计资产总值计算;"); System.out.println("7.月还款额计算。"); System.out.println("请选择:"); int k = scanner.nextInt(); switch (k) { case 1: fulijisuan(); break; case 2: danlijisuan(); break; case 3: benjinjisuan(); break; case 4: nianxianjisuan(); break; case 5: baochoulvjisuan(); break; case 6: leijizichanjisuan(); break; case 7: yinhangdaikuanjisuan(); break; default: break; } } private static void yinhangdaikuanjisuan() { // TODO Auto-generated method stub System.out.println("请输入贷款金额:"); double P = scanner.nextDouble(); System.out.println("请输入年利率:"); double i = scanner.nextDouble(); System.out.println("请输入还款期限:"); int n = scanner.nextInt(); double F = P * (i/12) * Math.pow( 1 + i/12 ,12 * n)/(Math.pow(1 + i/12, 12 * n)-1); String f = df.format(F); System.out.println("月还款额:"+f); } private static void leijizichanjisuan() { // TODO Auto-generated method stub System.out.println("请输入本金:"); double P = scanner.nextDouble(); System.out.println("请输入每年的投资金额:"); double T = scanner.nextDouble(); System.out.println("请输入投资年限:"); int n = scanner.nextInt(); System.out.println("请输入投资利率:"); double i = scanner.nextDouble(); for(int j = 0;j < n;j++){ P = P * (1 + i); P = P + T; } double F = P - T; String f = df.format(F); System.out.println("资产总值是:"+f); } private static void baochoulvjisuan() { // TODO Auto-generated method stub System.out.println("请输入本金:"); double P = scanner.nextDouble(); System.out.println("请输入复利终值:"); double F = scanner.nextDouble(); System.out.println("请输入年限:"); int n = scanner.nextInt(); double i = Math.pow((F / P), (1.0 / n)) - 1; String f = df.format(i); System.out.println("利率是:"+f); } private static void nianxianjisuan() { //TODO Auto-generated method stub System.out.println("请输入本金:"); double P = scanner.nextDouble(); System.out.println("请输入利率:"); double i = scanner.nextDouble(); System.out.println("请输入复利终值:"); double F = scanner.nextDouble(); int n = (int) (Math.log(F / P) / Math.log(1 + i)); System.out.println("年限是:" + n); } private static void benjinjisuan() { //TODO Auto-generated method stub System.out.println("请输入复利终值:"); double F = scanner.nextDouble(); System.out.println("请输入利率:"); double i = scanner.nextDouble(); System.out.println("请输入年限:"); int n = scanner.nextInt(); double P; P = F / Math.pow(1 + i, n); String p = df.format(P); System.out.println("本金是:" + p); } private static void danlijisuan() { //TODO Auto-generated method stub System.out.println("请输入本金:"); double P = scanner.nextDouble(); System.out.println("请输入利率:"); double i = scanner.nextDouble(); System.out.println("请输入年限:"); int n = scanner.nextInt(); double F; F = P * (1 + i * n); String f = df.format(F); System.out.println("单利终值是:" + f); } private static void fulijisuan() { System.out.println("请输入本金:"); double P = scanner.nextDouble(); System.out.println("请输入利率:"); double i = scanner.nextDouble(); System.out.println("请输入年限:"); int n = scanner.nextInt(); double F; F = P * Math.pow(1 + i, n); String f = df.format(F); System.out.println("复利终值是:" + f); } }
时间: 2024-10-08 17:57:03