gecko

//This file was creatd on the 04/11/2K+6 at 14:20 by Christopher Beale for Year 1 Computer Science Coursework//Its purpose is to define the CMillitaryTime class and implement itimport java.awt.*;import java.awt.event.*;import javax.swing.*;public class CMillitaryTime implements ActionListener {	JFrame mTFrame;	JPanel mTPanelInput, mTPanelOutput;  //split out program in half, one for input and one for output	JTextField mTTimeIn;	JLabel mTResult, mTPicture;	JComboBox mTAmPm;	JButton mTConvert;	String[] amPm = { "AM", "PM" };	final int NONE = 0;	final int AM = 1;	final int PM = 2;    public CMillitaryTime() {    	    	mTFrame = new JFrame("Millitary Time Converter");    	mTFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);    	mTFrame.setSize(400,400);    	mTPanelInput = new JPanel(new GridLayout(1,2));    	mTPanelOutput = new JPanel(new GridLayout(2,2));    	    	    	addComponents();    	    	mTFrame.getContentPane().add(mTPanelInput, BorderLayout.NORTH);    	mTFrame.getContentPane().add(mTPanelOutput, BorderLayout.SOUTH);    	mTFrame.pack();    	mTFrame.setVisible(true);    	setPicture(NONE);    	    }        private void addComponents() {    	mTTimeIn = new JTextField(8);    	mTTimeIn.addActionListener(this);    	mTAmPm = new JComboBox(amPm);    	mTAmPm.addActionListener(this);    	mTPanelInput.add(mTTimeIn);    	mTPanelInput.add(mTAmPm);    	    	mTConvert = new JButton("Convert");    	mTConvert.addActionListener(this);    	mTResult = new JLabel("00:00:00");    	mTPicture = new JLabel();    	mTPanelOutput.add(mTConvert);    	mTPanelOutput.add(mTResult);    	mTPanelOutput.add(mTPicture);    }        public void actionPerformed(ActionEvent e) {    	switch(mTAmPm.getSelectedIndex()){    		default: case 0:    			setAM();    			break;    		case 1:    			setPM();    			break;    	}    }        private void setAM() {    	    	if(validTime(mTTimeIn.getText()))    	{    		mTResult.setText(mTTimeIn.getText());    		setPicture(AM);    	}    	    }        private void setPM() {    	if(validTime(mTTimeIn.getText()))    	{    		String[] splitTime = mTTimeIn.getText().split(":");    		int splitTimeTemp = Integer.parseInt(splitTime[0]) + 12;    		mTResult.setText(Integer.toString(splitTimeTemp) + ":" + splitTime[1] + ":" + splitTime[2]);    		setPicture(PM);    	}    }        private boolean validTime(String time) {    	if(!validStringTime(time))    	{    		mTResult.setText("Invalid");    		setPicture(NONE);    		return false;    	}    	return true;    }        private boolean validStringTime(String time){    	String[] splitTime = time.split(":");    	if(splitTime.length != 3 ||    		Double.parseDouble(splitTime[0]) > 11.00 ||     			Double.parseDouble(splitTime[1]) > 60.00 ||     				Double.parseDouble(splitTime[2]) > 60.00)    	{    		return false;    	}    	return true;    }        private void setPicture(int image) {    	ImageIcon icon;    	switch(image)    	{    		default: case NONE:    			icon = createImageIcon("none.gif"); break;    		case AM:    			icon = createImageIcon("am.gif"); break;    		case PM:    			icon = createImageIcon("pm.gif"); break;    	}    	if (icon != null) {            mTPicture.setText(null);            mTPicture.setIcon(icon);        } else {            mTPicture.setText("Image broken");        }    }        private ImageIcon createImageIcon(String path) {        java.net.URL imgURL = CMillitaryTime.class.getResource(path);        if (imgURL != null) {            return new ImageIcon(imgURL);        } else {            System.err.println("Couldn't find file: " + path);            return null;        }    }    	private static void createAndShowGUI(){			LookAndFeel lf = UIManager.getLookAndFeel();	// attempt to set the windows look and feel.	// if it doesnt work, no matter, we dont do anything with the exceptions	// anyway, and it will stick with the default java look and feel    try {        UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");	    } catch (InstantiationException e) {	    } catch (ClassNotFoundException e) {	    } catch (UnsupportedLookAndFeelException e) {	    } catch (IllegalAccessException e) {	    }		CMillitaryTime gui = new CMillitaryTime(); //create a new object of ourselves, which runs all the gui code	}		public static void main(String[] args){		//use the swing invokeLater function to start a new thread to display the gui		//much neater and safer		javax.swing.SwingUtilities.invokeLater(new Runnable() {            public void run() {                createAndShowGUI();            }        });			}	}