package r4r.co.in;

import java.util.*;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

public class CollectionsExample {

	/**
	 * @param args
	 */
	public static void main(String[] args) throws IllegalArgumentException, NoSuchElementException, IOException
	{
		// TODO Auto-generated method stub
		
		
		
		try
		{
			 int i;
			 String string;
		     boolean bool;
		     double dbl;
			
			FileWriter fwrite=new FileWriter("C:\\shashi\\scannerfile.txt");   // here we have created a writable file at the "C:\\shashi\\scannerfile.txt" location
			fwrite.write("Hey guys!! this is 1 true example of scanner class");  // we have write the following string to the file created
			fwrite.close();     // close the writable file
			
			FileReader fread=new FileReader("C:\\shashi\\scannerfile.txt");    // creating a FileReader object
			Scanner scannerobj = new Scanner(fread);                       // passing the fread to Scanner class's constructor
			while(scannerobj.hasNext())                   // loop till scannerobj has some more tokens to read
			{
				if(scannerobj.hasNextInt())        // checks whether the token is an integer
				{
					i = scannerobj.nextInt();
					System.out.println("The integer values are: "+i);  // displays the integer
				}
				
				else if(scannerobj.hasNextBoolean())    // checks whether the token is a boolean value
				{
					bool = scannerobj.nextBoolean();
					System.out.println("The boolean values are: "+bool);   // displays the boolean value
					
				}
				else if(scannerobj.hasNextDouble())     // checks whether the next token is a double value
				{
					dbl = scannerobj.nextDouble(); 
					System.out.println("The double values are: "+dbl);    // displays the double value
					
				}
				else
				{
					string = scannerobj.next();
					System.out.println("The string words are: "+string);   // displays the string value
				}
			}

		}
		
		catch(IllegalArgumentException e)
		{
			e.printStackTrace();
		}
		
		catch(NoSuchElementException e)
		{
			e.printStackTrace();
		}
		
		catch(IOException e)
		{
			e.printStackTrace();
		}
	}
}