I want keep using this variable which is in my if-statement

I'm currently trying to write a little code in java that will convert integers to romanian numbers.

So far I got this:

public class Test{
    public static void main(String[] args){

        int x = Integer.parseInt(args[0]);

        if(x>=1000){
            int temp= x;
            temp=temp%1000;
            x=x/1000;
            for(int i=x; i>=1; i--){
                System.out.print("M");
            }
        }
    }
}

I'm pretty sure it's not the best way to code it but it's my own way and I don't like to change it.

But to continue like that I need to know how I can keep working with temp?

I want use it in another if-statement which will be outside of this one.

But it doesn't seem to work because temp only exists inside this if-statement you see in the code.

Isn't there a way to use it outside without removing it from the if-statement? If so, please do tell me.