Why is the input not closing and is Java resources leaking?

Question

Java

Hi guys.
I wrote a simple console input program, console output in netBeans and everything seems to be fine.
But when I open the file in Visual Studio Code, it says:

[Java] Resource leak: 'input' is never closed [536871799]
Scanner input - readingconsoleinputconsoleoutput.ReadingConsoleInputConsoleOutput.main(String[])

Resource leak: 'input' never closes
Scanner input - readconsoleinputconsoleoutput.ReadingConsoleInputConsoleOutput.main(String[])

Source

package readingconsoleinputconsoleoutput;
import java.util.Scanner;
public class ReadingConsoleInputConsoleOutput {
  public static void main(String[] args) {
    Scanner input = new Scanner(System.in);
    String name;
    String surName;
    int yearBorn;
    int yearNow;
    System.out.print("Your name:");
    name = input.nextLine();
    System.out.print("Your middle name:");
    surName = input.nextLine();
    System.out.print("What is the year now?");
    yearNow = input.nextInt();
    System.out.print("What year were you born?");
    yearBorn = input.nextInt();
    System.out.print("Hello, "+name+" "+surName+" ");
    System.out.print("Your age: "+(yearNow-yearBorn)+"");
  }
}

What is most interesting, I did everything according to the instructions from the book. Also, if you copy the original message from the book, it gives the same thing. And in netBeans everything is in order, there are no comments.
Please explain what could be the problem? Thank you!

Answer 1

You must close the scanner when you have finished reading.
According to the modern approach (since JDK 7) it should be wrapped in try...catch with auto-closing of resources:

String name;
String surName;
int yearBorn;
int yearNow;
try (Scanner input = new Scanner(System.in)) { // input автоматически закроется
    System.out.print("Your name:");
    name = input.nextLine();
    System.out.print("Your middle name:");
    surName = input.nextLine();
    System.out.print("What is the year now?");
    yearNow = input.nextInt();
    System.out.print("What year were you born?");
    yearBorn = input.nextInt();
    System.out.print("Hello, "+name+" "+surName+" ");
    System.out.print("Your age: "+(yearNow-yearBorn)+"");
} catch(Exception e) {
    //Обработка исключения, если возникло.
    e.printStackTrace();
}

Or the deprecated version with manual closing:

Scanner input = new Scanner(System.in);
try {
  ...
} catch(Exception e) {
   e.printStackTrace();
} finally {
   input.close(); // Закрываем
}

Answer 2

Aleksey T
... modern approach (with JDK 7) ..... obsolete version a
thousand thanks for the classification - do you have a link where it says that it is obsolete and in general about lagacs ?