[Q#18119211][A#18119273] How to check if user input is not an int value

https://stackoverflow.com/q/18119211

I need to check if a user input value is not an int value. I've tried different combinations of what I know but I either get nothing or random errors For example: If the user inputs "adfadf 1324" it'll raise a warning message. What I have:

Answer

https://stackoverflow.com/a/18119273

Simply throw Exception if input is invalid

APIzation

Scanner sc=new Scanner(System.in);
try
{
  System.out.println("Please input an integer");
  //nextInt will throw InputMismatchException
  //if the next token does not match the Integer
  //regular expression, or is out of range
  int usrInput=sc.nextInt();
}
catch(InputMismatchException exception)
{
  //Print "This is not an integer"
  //when user put other than integer
  System.out.println("This is not an integer");
}

package com.stackoverflow.api;

import java.util.InputMismatchException;
import java.util.Scanner;

public class Human18119273 {

  public static boolean userInputNotInt() {
    Scanner sc = new Scanner(System.in);
    try {
      System.out.println("Please input an integer");
      // nextInt will throw InputMismatchException
      // if the next token does not match the Integer
      // regular expression, or is out of range
      sc.nextInt();
    } catch (InputMismatchException exception) {
      // Print "This is not an integer"
      // when user put other than integer
      System.out.println("This is not an integer");
      sc.close();
      return true;
    }
    sc.close();
    return false;
  }
}

package com.stackoverflow.api;

import java.util.InputMismatchException;
import java.util.Scanner;

/**
 * How to check if user input is not an int value
 *
 * @author APIzator
 * @see <a href="https://stackoverflow.com/a/18119273">https://stackoverflow.com/a/18119273</a>
 */
public class APIzator18119273 {

  public static void check() throws Exception {
    Scanner sc = new Scanner(System.in);
    try {
      System.out.println("Please input an integer");
      // nextInt will throw InputMismatchException
      // if the next token does not match the Integer
      // regular expression, or is out of range
      int usrInput = sc.nextInt();
    } catch (InputMismatchException exception) {
      // Print "This is not an integer"
      // when user put other than integer
      System.out.println("This is not an integer");
    }
  }
}