Why won't this code run?

Question

public class Password {

public static void main(String[] args)
{
int I = 12;
if int I = 12;

System.out.println("Hello!");

else
System.out.println("Nope");
}
}

Answer 1

int I = 12; //assingn the value to variable l
if (l ==12){//compare the value of variable l
//do something if l value == 12
System.out.println("Hello!");
}else{
//do something else
System.out.println("Nope");
}

Answer 2

use == instead of = while checking the condition
and use parenthesis as explained in other comments

Answer 3

It still won't work, it keeps saying int is not an Rvalue

Answer 4

once you define I and an int, you just call it I after than, you are trying to define it a second time and it already exists.

int I = 12; define
I==12; call
int I==12; define again, throw error