Assigning a value to a variable using if statement

Suppose i want to assign the variable named involved the value true if another variable, say the variable named p, has a value between 50 and 150. How do i do this?

I've tried the following:

import java.util.Scanner;

public static void main(String[] args) {

    Scanner scan = new Scanner(System.in);
    int p = scan.nextInt();

    boolean involved; 

    if (p >= 50 && p <= 150) {
        involved = true; 
        System.out.println(included);
    }

}

However when i try this i get upp the error: variable p might not been initialized. What am i doing wrong?