myWorld.txt

import java.awt.EventQueue;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.GridLayout;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
/*
 * class Encrit13
 * @author Leo Hernandez
 * Course: advance programming Fall 2012
 * Class: This class encrypts each letter by returning the letter located 13 spaces to the right.
 		if there isn't a letter 13 spaces after, it wraps around and starts at the beginning.
 *		
 * PURPOSE: the purpose for this class is to encrypt a text by changing the letter for the 13th letter after it.
 *
 * i got some of the code for the enter key action listener in
 * http://www.coderanch.com/t/342428/GUI/java/write-event-Enter-key
 */




public class Encrit13 {
	private static JTextField text = new JTextField(20); 
	private static JTextField encoded = new JTextField(20);
	//runs when 'Enter' is pressed
	private ActionListener listener = new ActionListener(){


		/*
		 * (non-Javadoc)
		 * I was having some minor difficulties with the actionEvent , but I met with Vu 
		 * one day and he helped me with the code below.
		 * he showed me the Java Ascii Table
		 */
		@Override
		public void actionPerformed(ActionEvent e) {
			// TODO Auto-generated method stub
			String line = text.getText();  
			String encryptM = "";

			for(int i = 0; i<line.length();i++)
			{
				int asciiRep = (int) line.charAt(i);
				if((asciiRep >= 65 && asciiRep <= 90)|| asciiRep >= 97 && asciiRep <= 122)
				{
					if((asciiRep <= 77)|| (asciiRep >= 97 && asciiRep <= 109))
					{
						asciiRep += 13;

					}//end of if
					else if((asciiRep > 77 && asciiRep <= 90)|| (asciiRep >= 110 && asciiRep <= 122))
					{
						asciiRep -= 13;
					}//end of if
				}//end of main if
				encryptM += (char)asciiRep;
			}//end of for 
			encoded.setText(encryptM);
			//encoded message cannot be edited 
			encoded.setEditable(false);
		}// end of ActionPerformed

	};// end of actionListener

	//Constructor
	/*
	 * Method: Encrit13
	 * 		
	 * 		This method runs the action listener
	 */
	public Encrit13(){
		text.addActionListener(listener);  

	}
	/*Method: frame
	 * this method creates the frame and makes all the parts visible
	 */

	public static void frame() {
		//Create and set up the window.
		JFrame frame = new JFrame("Encript by Rotating 13 "); // title


		JPanel j1 = new JPanel(new FlowLayout());
		JPanel panel2 = new JPanel();
		JLabel original = new JLabel ("Original message: ");
		JLabel encrypt = new JLabel ("Encrypted message:");

		j1.add(original);
		j1.add(text);
		panel2.add(encrypt);
		panel2.add(encoded);

		frame.add(j1);
		frame.add(panel2);
		frame.setLayout(new GridLayout(2,2));
		frame.setSize(300,150);
		frame.setVisible(true);
		frame.setLocationRelativeTo(null);// makes the window in the center of the screen
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);// allows the program to close by clicking on the x

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

	/*
	 * Method: main
	 * 
	 * 	This method runs the program
	 */
	public static void main(String[] args) {  
		EventQueue.invokeLater(new Runnable(){  
			@SuppressWarnings("static-access")
			public void run() {  
				new Encrit13().frame();  
			}  
		});  
	}  
}