이클립스로 이것저것 해보다가 밑에 내용 처럼 적었는데 오류가 나네요.. 책보고 따라해본건데 어디가 문제인지 답답합니다..
import java.util.Scanner;

public class ThreeNumbers
{
        public static void main(String[] args)
        {
                Scanner keyboard  = new Scanner(System.in);
        
                System.out.println("Enter three whole numbers");
                System.out.println("separated by one or more spaces");
                System.out.println("You will get the average of the three numbers");
                
                double d1, d2, d3, d4;
                d1 = keyboard.nextInt();
                d2 = keyboard.nextInt();
                d3 = keyboard.nextInt();
                d4 = (d1 + d2 + d3)/3;
                
                System.out.println("The average of the three numbers is " + d4);
                
        }
}
여기서 Scanner keyboard  = new Scanner(System.in);가 오류가 나는데 아래 처럼 나왔습니다.
Resource leak : 'keyboard' never closed
Line breakpoint : ThreeNumbers[line- : 7] - main(String[])
뭐가 문제인가요? 제대로 했다고 생각했는데 막혀버리니 답답하네요 ㅠㅠ