explanation requested for "for"

Hi All,

I came upon this revision for "for" and adapted it to my program
below:

" for(int i = 0; i<10; i++){ }"

is changed to this form:

"for(String s: inputList){ }"

and it works !!!.... is shown below Why?

import java.awt.*;
import javax.swing.*;
import java.util.*;
import java.util.List;

//source clues List and Shuffle and for revision questioned at
//http://www.vbforums.com/showthread.php?p=2186249

public class PnlArrayListShuffleDemo extends JPanel{
  private int number = 0 ;
  private String strNumber[] = new String [10];
  static private final String newline = "\n";
  JTextArea log;

  public PnlArrayListShuffleDemo() {
    super(new BorderLayout());
    log = new JTextArea(50,20);
    log.setMargin(new Insets(5,5,5,5));
    log.setEditable(false);
    JScrollPane logScrollPane = new JScrollPane(log);
    add(logScrollPane, BorderLayout.CENTER);
    System.out.println();
    log.append("Panel Array List Shuffle Demo");
    log.append(newline + newline);
    System.out.println("These are numbers in the Array");

    log.append("These are numbers in the Array");
    log.append(newline);
    for(int i = 0; i<10; i++){
      strNumber[i] = Integer.toString(i);
      number = Integer.parseInt(strNumber[i]);
      System.out.println(number);
      log.append(strNumber[i]+ newline );
    }
    System.out.println();
    log.append(newline);
    System.out.println("These are numbers in the List ");
    log.append("These are numbers in the List");
    List<String> inputList = Arrays.asList(strNumber);
    log.append(newline);
    for(String s: inputList){
      System.out.println(s);
      log.append(s + newline);
    }
    System.out.println();
    log.append(newline);
    System.out.println("These are numbers in the Shuffled List ");
    log.append("These are numbers in the Shuffled List");
    Collections.shuffle(inputList);
    log.append(newline);
    for(String s: inputList){
      System.out.println(s);
      log.append(s + newline);
    }
  }

  private static void createAndShowGUI() {
    // Create and set up the window.
    JFrame frame = new JFrame("Panel Array List Shuffle Demo");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    //Add content to the window.
    frame.add(new PnlArrayListShuffleDemo());

    //Display the window.
    frame.pack();
    frame.setVisible(true);
  }

  public static void main(String[] args) {
    SwingUtilities.invokeLater(new Runnable() {
      public void run() {
        UIManager.put("swing.boldMetal", Boolean.FALSE);
        createAndShowGUI();
      }
    });
  }
}