scanner in java

/**
 * @author lautturi.com 
 * Java example: Java Scanner
 */

import java.util.*;
import java.util.regex.Pattern;

public class Lautturi {

	public static void main(String[] args) {
		// read input from system standard input (Usually keyboard)
		Scanner scan = new Scanner(System.in);
		
//		// read input from the input stream
//		Scanner scanner = new Scanner(InputStream input);
//
//		// read input from files
//		Scanner scanner = new Scanner(File file);
//		Scanner scanner = new Scanner("test.txt");
//
//		// read input from a string
//		Scanner scanner = new Scanner(String str);
		
		System.out.println("scanner take input from console:");
		
		// take anything
		String next = scan.next();
		
		// take an integer
//		int i = scan.nextInt();
//		float f = scan.nextFloat();
//		double d = scan.nextDouble();
//		String str = scan.nextLine();
//		char ch = scan.nextLine().charAt(0);
		System.out.println(next);
	}
}