// File:  EOFTest.java

// The outer loop shows how to use Scanner to process any number of data 
// values - in this case, lines of text - until a "sentinel value" is read.

// For each line read, we create a second Scanner object associated with that
// line only.  Then, in the inner loop, we use Scanner method next() to extract
// each token from the line, and each token is printed.  
//  
// Since there is no way to know how many tokens each line contains, we use
// hasNext() - a boolean method of the Scanner class - to loop until the 
// current line has no more tokens.

import java.util.Scanner ;

public class EOFTest
{
	public static void main (String args[]) 
	{
		Scanner inputScan = new Scanner(System.in) ;
		
		System.out.println("Enter a sentence (or Q quit): ") ;
		String line = inputScan.nextLine() ;
		
		while ( ! line.equalsIgnoreCase("Q") )	// while more input lines...
		{				
			// create a Scanner object to scan the line just read
			Scanner lineScan = new Scanner(line) ;
			
			System.out.println("\nHere are the tokens of the current line:\n") ;
			
			while ( lineScan.hasNext() )		// while line has more tokens...
			{
				String token = lineScan.next() ;    // ...get next token
				System.out.println(token) ;			// ...and print it
			}
			
			// print the tokenized line
			System.out.println("\nThe line just tokenized was:\n" 
			                    + line + "\n") ;	
			// prompt for and read next line			
			System.out.println("Enter another sentence (or Q to quit): ") ;
			line = inputScan.nextLine() ;
		}
	}
}

/*  sample output

Enter a sentence (or Q quit):
I had one grunch but the eggplant over there

Here are the tokens of the current line:

I
had
one
grunch
but
the
eggplant
over
there

The line just tokenized was:
I had one grunch but the eggplant over there

Enter another sentence (or Q to quit):
It's crackers to slip a rozzer the dropsy in snide!

Here are the tokens of the current line:

It's
crackers
to
slip
a
rozzer
the
dropsy
in
snide!

The line just tokenized was:
It's crackers to slip a rozzer the dropsy in snide!

Enter another sentence (or Q to quit):
Q
Press any key to continue...

*/