scanner错误关闭导致的异常

public class test2 {

  public static void main(String[] args) {
    Scanner scanner1 = new Scanner(System.in);
    System.out.println("run scanner1.close()");
    scanner1.close();

    Scanner scanner2 = new Scanner(System.in);
    System.out.println("run scanner2.nextLine()");
    scanner2.nextLine();

  }
}public class test2 {

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