Why my code doesnt work?

Question

class MyClass {

static int sum(String val1, String val2) {
System.out.println("val1+val2");
}

public static void main(String[ ] args) {
sum (flying,dagger);
}
}

Answer 1

Next time please use the Code Playground and post a link to it instead of writing the code out.

Answer 2

Sololearn has code playground for a reason. It can run basic codes.
Perhaps you can post questions asking here "Why does my code not work" if it doesn't work

Answer 3

You need at least declare flying,dagger vars before passing them as parameters.

Answer 4

@dima class MyClass {

static void sayHello(String name) {
System.out.println("Hello " + name);
}

public static void main(String[ ] args) {
sayHello("David");
sayHello("Amy");
}

}
david and amy isnt declared