It is a very simple code but doesn't compile

Question

this is the code=
class Apples {
public static void main(String[] args) {
System.out.println("Hello world! ");
}
}

When I compile it,it keeps on telling me invalid character constant

Answer 1

Works fine for me;
https://code.sololearn.com/cLItPF4WePX1/?ref=app

Answer 2

I did exactly the same thing you did and it is still says invalid character constant

Answer 3

maybe because of my compiler.
I use eclipse compiler 4.5 or probably a setting

Answer 4

which application do you feel I should use to run Java codes on pc

Answer 5

pls what is the meaning of character constant