Question

How would I use a variable declared within an if statement in another method of the same class??

Ex.

public static void declaration_st(ArrayList E) {
    if (look("float")) {
        String funcID = tokM1(E).getToken(); //I Want to use this funcID in another method 
        Juccept("float");
       
    } else if (look("int")) {
        String funcID = tokM1(E).getToken(); //or if the program gets to an int I want it to use this funcID from this if statement in another method

}

}

Answer 1

If you want to use that variable inside a different method, then you probably should think of making that variable as a field of the class.

class Cls {
    private String funcID; 

    public static void declaration_st(ArrayList E) {
        if (look("float")) {
            funcID = tokM1(E).getToken();   // now you can access funID from any method. 
            Juccept("float");
        } else if (look("int")) {
            funcID = tokM1(E).getToken();
        }
    }
}