import java.util.Scanner; public class inputParse { public static void main(Stri

Question

import java.util.Scanner;

public class inputParse
{
   public static void main(String[] args)
   {
      String input;
      Scanner scanner = new Scanner(System.in);
      
      System.out.println("Please enter any numbers or letters: ");
      input = scanner.nextLine();
      
      Scanner sc = new Scanner(input).useDelimiter(" ");
      int intcount = 0;
      int dblcount = 0;
      int strcount = 0;
      
      while (sc.hasNext())
      {
          if(sc.hasNextInt() == true)
          {
            System.out.println("Integer: " + sc.nextInt());
            intcount++;
            System.out.println(intcount);
          }
          
          else if(sc.hasNextDouble() == true)
          {
            System.out.println("Double: " + sc.nextDouble());
            dblcount++;
            System.out.println(dblcount);
          }
          
          else           {
            System.out.println("String: " + sc.next());
            strcount++;
            System.out.println(strcount);
          }
       }  
   }
}

Well this program indetifies if the user input is an integer a double or a string. Now the problem that I have is that I have to sum up the integers, then I have sum up the double and finally concatenate the string.

Any suggestions? Thank you

Explanation / Answer

Parameters

pattern -- a string specifying the pattern to scan

Return Value

This method returns true if and only if this scanner has another token matching the specified pattern

Exception

IllegalStateException -- if this scanner is closed

Example

The following example shows the usage of java.util.Scanner.hasNext() method.

package com.tutorialspoint;

import java.util.*;

import java.util.regex.Pattern;

public class ScannerDemo {

public static void main(String[] args) {

String s = "Hello World! 3+3.0=6";

// create a new scanner with the specified String Object

Scanner scanner = new Scanner(s);

// check if the scanner's next token matches "World"

System.out.println("" + scanner.hasNext("World"));

// check if the scanner's next token matches "Hello"

System.out.println("" + scanner.hasNext("Hello"));

// print the rest of the string

System.out.println("" + scanner.nextLine());

// close the scanner

scanner.close();

}

}

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