/**
 * IfStatementEx
 *
 * This program demonstrates if/else structures.
 *
 * @author Brad Rippe
 */
 
 import javax.swing.*; 
 import java.awt.*;
 import java.awt.event.WindowAdapter;
 import java.awt.event.WindowEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.ActionEvent;
 import java.awt.Container; 
 import javax.swing.UIManager;
 
 public class IfStatementEx {
 
 	public static void main(String[] args) {
	
		/** DON'T BE CONCERNED WITH THIS SECTION **/		
		JFrame frame = new JFrame( "If/else Demo" );
		
		try {
	        UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
    	} catch (Exception e) { }


    	frame.addWindowListener(new WindowAdapter() {
        	public void windowClosing(WindowEvent e) {
				System.exit(0);
			}
	    });
		
		final JTextArea textArea = new JTextArea( 35, 35 );
		
		JScrollPane scrollPane = new JScrollPane( textArea );
		scrollPane.setPreferredSize( new Dimension( 600, 300 ) );
		frame.getContentPane().add( scrollPane, BorderLayout.CENTER );

		JButton codeButton = new JButton( "Show Code" );		
		codeButton.addActionListener( new ActionListener() {		
			public void actionPerformed( ActionEvent e ) {
				textArea.setFont( new Font("Courier", Font.BOLD, 16 ) );
				textArea.setText( "If\\Else Statement\n\n" +
								  "if( input.equals( \"T\" ) ) {\n\n" +
								  "\t tA.setText( \"You are correct!\" );\n\n" +
								  "} else if( input.equals( \"F\" ) ) {\n\n" +
								  "\t tA.setText( \"Incorrect, java does expect a true or false value!\" );\n\n" +
								  "} else {\n\n" +
								  "\t tA.setText( \"You have typed an invalid option. Please try again!\" );\n\n" +
								  "}\n" );
			}
		});
		
        frame.getContentPane().add( codeButton, BorderLayout.SOUTH );					
	    frame.pack();
      	frame.setVisible(true);
		
		testIfElse( frame, textArea );
	}
	
	public static void testIfElse(JFrame frame, JTextArea tA) {
		
		String input = JOptionPane.showInputDialog( frame, "If statements expect the conditional statement to evaluate to either true or false.\n" +
													"Type \"T\" for true and \"F\" for false" );
		
		/***** THIS IS THE SECTION OF INTEREST *****/
		if( input.equals( "T" ) ) {
		
			tA.setText( "You are correct!" );
		
		} else if( input.equals( "F" ) ) {
			
			tA.setText( "Incorrect, java does expect a true or false value!" );
			
		} else {
			
			tA.setText( "You have typed an invalid option. Please try again!" );
		}	
	}
	
}