我能做到这个:
import java.util.ArrayList;
public class Array {
public static void main(String args[]){
ArrayList<String> myList = new ArrayList<String>();
myList.add("S");
}
}
但是我无法做到这一点:
import java.util.ArrayList;
public class Array {
ArrayList<String> myList = new ArrayList<String>();
myList.add("S");
}
Why I have to include the main method?