无法解析扫描仪变量

Question

In my program, the user will be asked to input 3 integers. The integers will then be read using the Scanner class and listed back to the user.

This is my code:

import java.util.Scanner;

public class Echoer 
{
 public static void main(String[] args) 
 {

  /* The Data Below Will Read The Numbers Input Into The Prompt*/

  Scanner input = new Scanner(System.in);
  System.out.println("Please Enter Three Integers: ");

  int number;
  number = input.nextInt();

  Scan.close();

  System.out.println("Thanks. The Numbers You Entered Are: " + number);

  } 
}

This is the error it returns:

Exception in thread "main" java.lang.Error: Unresolved compilation problem: 
    Scan cannot be resolved

Why does it return this error? How can I fix this issue?

Answer 1

In your code, you never defined what Scan was. Use input.close() rather than Scan.close() .

Answer 2

Scan cannot be resolved

means that you never defined Scan . This is because you said Scan.close() . You need to change it to input.close() because input is the name of the instance of the Scanner class.

Answer 3

As others pointed out, you have to close input instead of Scan as shown below.

import java.util.Scanner;

public class Echoer 
{
 public static void main(String[] args) 
 {

/* The Data Below Will Read The Numbers Input Into The Prompt*/

  Scanner input = new Scanner(System.in);
  System.out.println("Please Enter Three Integers: ");

   int number;
   number = input.nextInt();

    input.close();

     System.out.println("Thanks. The Numbers You Entered Are: "+number);

}   
}