Press 2 to contact customer support

Question

You are creating an automated phone system for bank clients.
Number selections should activate the actions noted below as follows:
1 => Language selection
2 => Customer support
3 => Check account balance
4 => Check loan balance
0 => Exit

You can use the first 4 commands in a random sequence without interrupting the phone call - only the number 0 does.
Write a program that will continuously take a number as input and output the corresponding message, until the client enters 0.

Sample Input
1
4
3
0

Sample Output
Language selection
Check loan balance
Check the balance
Exit

Here is my code:
https://code.sololearn.com/cPdw0xPz5I3p/?ref=app

Can you please tell me what's wrong in this code. I tried with this code. But still the compiler is showing exception errors!

Answer 1

your code is fine,
you will get exception handling error.
when the input does not contain a 0 to exit.
because once you hit submit in sololearn, you will not be asked to enter a number again. so do{ }while () will crash, as there's no more input to compare.
input must be entered all at once in multiple lines.
for example :
3
2
4
2
0

Answer 2

package learningcoding;

import java.util.Scanner;
//jq
public class lesson12 {
public static void main(String[] args) {
Scanner choice = new Scanner(System.in);
int num1;
int num = choice.nextInt();
//for do while loop if int num1 ouside the loop it will cause infinite loops;
switch (num) {
case 1:
System.out.println("Language selection");
break;
case 2:
System.out.println("Customer support");
break;
case 3:
System.out.println("Check the balance");
break;
case 4:
System.out.println("Check loan balance");
break;
default:
System.out.println("Exit");
}
System.out.println();
do {
num1 = choice.nextInt();
if (num1 == 1) {
System.out.println ("Language selection"); }

else if (num1 == 2) {
System.out.println("Customer support"); }

else if (num1 == 3) {
System.out.println("Check the balance"); }

else if (num1 == 4) {
System.out.println("Check loan balance"); }

} while (num1 != 0);
System.out.println("Exit");

}
}

your input outside the loop will cause running forever