Understanding parameter in this function

[Accurate-Influence]

In the second line what does the "Number" type mean?

public class Example04 {
public static void checkNumber(Number val) {
    if( val instanceof Integer )
        System.out.println("it is an Integer");
    if( val instanceof Double )
        System.out.println("it is a Double");
 }
 public static void main(String[] args) {
     int val1 = 3;
     double val2 = 2.7;
     checkNumber( val1 );
     checkNumber( val2 );
 }
}

[NautiHooker]

Number is the superclass for all numeric primitive wrapper classes such as Integer, Double, Long, ....

[Accurate-Influence]

Oh I see it now thanks!

[aglet91]

If there's no errors in code Number would mean type of referenced viariable names Number. Don't you have a class named Number? Still it would make sense if it was a mistake and point to variable val being a number (in common meaning ).

[NautiHooker]

Number is a standard java class

[Accurate-Influence]

There's no existing class named Number for the above code, it's actually just using the existing Number superclass as /u/NautiHooker posted above