Utilicé switch/case para imprimir las ganancias anuales dependiendo de la cuenta bancaria que el usuario elija y quiero hacer este programa, cada vez que el usuario ingrese una entrada inapropiada, imprima el mensaje de "entrada inapropiada" y permita que el usuario vuelva a ingresar la cuenta bancaria que quiero elegir Pero, actualmente mi código solo imprime el mensaje de "entrada inapropiada". ¿Cómo puedo arreglarlo?
public static void main(String[] args) throws Exception { //initialize variables String bank = ""; double money; //asks the user to type the amount of money Scanner myinput = new Scanner (System.in); System.out.print("Please enter the amount of money you want in the bank: "); //if the input is inappropriate, ensures the user to type the correct input while (true) { try { money = myinput.nextDouble(); break; } catch (Exception e) { System.out.println("This is inappropriate. Please enter the amount of money you want in the bank: "); myinput.nextLine(); } } //asks user to type the type of account they want System.out.println("Please enter the type of account you want: "); bank = myinput.next(); //print yearly earnings depending on the type of account that user chose switch (bank) { case "A" , "C": //if the user enters A or C, 1.5% of money will be yearly earnings System.out.println("You can make $" + (Math.round((0.015 * money)*100)) / 100.0); break; case "B": //if the user enters A or C, 2% of money will be yearly earnings System.out.println("You can make $" + (Math.round((0.02 * money)*100)) / 100.0); break; case "X": //if the user enters A or C, 5% of money will be yearly earnings System.out.println("You can make $" + (Math.round((0.05 * money)*100)) / 100.0); break; default: System.out.println ("This is inappropriate input. Please enter the type of account you want"); bank = myinput.nextLine(); } //closing scanner myinput.close(); }//end mainPuede tener una variable booleana para salir del bucle while. Flag se establece en false en switch/case porque while(false) no iterará más.
boolean flag = true; while(flag){ switch(bank){ case "A","C": System.out.println("You can make $" + (Math.round((0.015 * money)*100)) / 100.0); flag = false; //put this in all case. break; ... } }package com.javatutorial; import java.util.Scanner; class Main{ public static void main(String[] args) throws Exception { String bank = ""; double money = 0; boolean valid = false; Scanner myinput = new Scanner (System.in); System.out.print("Please enter the amount of money you want in the bank: "); while (true) { try { money = myinput.nextDouble(); break; } catch (Exception e) { System.out.println("This is inappropriate. Please enter the amount of money you want in the bank: "); myinput.next(); } } do { System.out.println("Please enter the type of account you want: "); bank = myinput.next(); switch (bank) { case "A": case "C": System.out.println("You can make $" + (Math.round((0.015 * money) * 100)) / 100.0); valid = true; break; case "B": System.out.println("You can make $" + (Math.round((0.02 * money) * 100)) / 100.0); valid = true; break; case "X": System.out.println("You can make $" + (Math.round((0.05 * money) * 100)) / 100.0); valid = true; break; default: System.out.println("This is inappropriate input. Please enter the type of account you want"); } }while( !valid); } }