class Ideone {
 
    public static void main(String[] args) {
        final String s = "s";
        final Object o = s;
        final String t = foo(s); // will call foo(String)
        final Object p = foo(o); // will call foo(Object)
    }
 
    public static String foo(String s) {
        System.out.println("String");
        return s;
    }
 
    public static Object foo(Object o) {
        System.out.println("Object");
        return o;
    }
}

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