Show code where the name of the method’s actual arguments and formal parameters are different so students see first hand that these two items don’t have to match for code to execute and improve their understanding of scope.

public class Example1 {
    public static void main(String[] args) {
        int x = 10;
        Example1.foo(x); // the variables match
    }
    public static void foo(int x) {
        System.out.println(x);
    }
}

public class Example2 {
    public static void main(String[] args) {
        int x = 10;
        Example2.foo(x); // it works not passing "y"
    }
    public static void foo(int y) {
        System.out.println(y);
    }
}