Could you say me my mistake ? @JAVA@

Question

https://code.sololearn.com/cKL2lyavJN7f/#java

where is my mistake ?

Answer 1

import java.util.Scanner;

public class Program
{

public static void main(String[] args) {
Scanner a1=new Scanner(System.in);
// Scanner way1=new Scanner(System.in);
// Scanner b1=new Scanner(System.in);

int a_=a1.nextInt();
int b_=a1.nextInt();
String way_=a1.next();

double result=makine(a_,way_,b_);

System.out.print(result);

}

static int makine(int a,String way,int b){
if(way==("*")){ return a*b; }
else if(way.equals("+")){ return a+b; }
else if(way.equals("/")){ return a/b; }
else if(way.equals("-")){ return a-b; }
else{ return 404; }
}

}

Answer 2

Thank you 😊

Answer 3

Sorry ?

Answer 4

😭😭😭😭😭😭😭😭😭😭😭