Java count all white space in String

Yesterday, before i go to sleep i tried to answer a simple question from a site. The question is about how to count all white space from String that input by a user. After a few time i failed, i found code below :

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COMPLETE SOURCE CODE FOR : CountAllWhitespaceInString.java
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::Click Here To Download This Java Source Code::

import java.util.Scanner;

public class CountAllWhitespaceInString
{
public static void main(String[]args)
{
 boolean a=true;
 Scanner sc=new Scanner(System.in);

 while(a)
 {
  System.out.println("Type EXIT to exit");
  String b=sc.nextLine();
  int whitespaceNumber=0;
 
  if(!b.equalsIgnoreCase("exit"))
  {
   try
   {
    for(int i=0;i<=b.length()-1;i++)
    {
     char temp=b.charAt(i);
     if(temp==' ')
     {
      whitespaceNumber++;
     }
    }
    System.out.println("Whitespace number is : "+whitespaceNumber);
   }
   catch(Exception exception)
   {
    System.out.println("DON'T DO THAT");
   }
  }
  else
  {
   a=false;
  }
 }
}
}

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JUST COMPILE AND EXECUTE IT
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Determine character is whitespace

Complete source code below will show you, how to determine character is whitespace or not in java.

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COMPLETE SOURCE CODE FOR : DetermineCharacterIsSpace.java
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public class DetermineCharacterIsSpace
{
public static void main(String[]args)
{
 //Create a space character using char by press spacebar once between single quote(' ')
 //You can try change it's value by change it to a letter 'A' for example.
 char a=' ';

 //Determine created character is space or not
 //using method isWhitespace from class Character.
 //isWhitespace is a static method, so we don't need to create object when
 //we want to use it.
 if(Character.isWhitespace(a))
 {
  //Print (It is a whitespace) if character is a whitespace
  System.out.println("It is a whitespace");
 }
 else
 {
  //Print (It is not a whitespace) if character is not a whitespace
  System.out.println("It is not a whitespace");
 }
}
}

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JUST COMPILE AND EXECUTE IT
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Omit all white space in String

Complete source code below will show you, how to omit all white space in a String.

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COMPLETE SOURCE CODE FOR : OmitWhitespaceInString.java
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public class OmitWhitespaceInString
{
public static void main(String[]args)
{
 //Create a String with whitespace
 String a="  Eliminate white space in t h i s  s t r i ng ";

 //Get String length that base on numbers of character include whitespace
 int temp=a.length();

 //Create an int variable
 int numbersOfLetter=0;

 //Create loop to count the numbers of Letter
 for(int i=0; i<temp; i++)
 {
  if(Character.isLetter(a.charAt(i)))
  {
   numbersOfLetter++;
  }
 }

 //Create an array base on numbers of letter that we get
 char[]storeAllCharacter=new char[numbersOfLetter];

 //Create an int variable
 int temp3=0;

 //Create loop to set each value in array
 for(int i=0; i<temp; i++)
 {
  if(Character.isLetter(a.charAt(i)))
  {
   storeAllCharacter[temp3]=a.charAt(i);
   temp3++;
  }
 }

 //Get String from created char array
 String resultStringAfterOmit=new String(storeAllCharacter);

 //Print result
 System.out.println(resultStringAfterOmit);
}
}

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JUST COMPILE AND EXECUTE IT
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