Fix the Error

Question

i created that java program to do some basic bank work.that user enter his id number trial then a message show on screen that choice the option the user enter his choice and voila it should work. but unfortunately it causes error(bad operands type +,- etc). kindly fix it.
https://code.sololearn.com/c2O41bpue73g/#java

Answer 1

rewrite it with use only one Scanner like:

Scanner sc = new Scanner(System.in);
int a = sc.nextInt();
String str = sc.next();
Double d = sc.nextDouble();

don't use var as variable name it is reserved keyword (Java 10)

var1 = sc.next().toUpperCase(); //get only upper case letters
...
} while(! var1.equals("E") ); //it is necessary compare Strings with .equals()

because it has more input, on SL you can debug test it like:
Scanner sc = new Scanner("100 200 C 300 D 400 S E"); //System.in);