Shorter solution to if,else if,else if

Question

I\'m looking for a way to shorten this code up and avoid repeating code and if statements. What I\'m doing is creating a calculator that searches strings for operators &quo

Answer 1

For changing the code you could use a switch statement and putting some of the redundant code before or after the switch.

int left = Integer.parseInt(exp.substring(0,i));
int right = Integer.parseInt(exp.substring(i+1,exp.length()));
switch(exp.charAt(i)){
    case '*':
        primeResult = left * right;
        break;
    case '/':
        ...
        break;
    case '+':
        ...
        break;
    case '-':
        ...
        break;
    default:
        ... // Error Handling.
}
System.out.println(primeResult);