graphical user interface

/*
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*/
package hello;

import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;

/**
* @author wesam
*/
public class Midlet extends MIDlet implements CommandListener {

Display desplay;
Form form1 = new Form("photo Alpoum");
Form form3 = new Form("Freinds");
Command photo = new Command("Photo Alboum", Command.EXIT, 0);
Command cmdexit = new Command("Exit", Command.EXIT, 0);
Command cmdshow = new Command("Show", Command.SCREEN, 1);
Command cmdback = new Command("Back", Command.BACK, 1);
Command cmdnext = new Command("Next", Command.SCREEN, 1);
Alert al = new Alert("");
int z;
int x = 0, k = 0, y = 1;
String[] mayArray = {"friends photos", "college photos", "natur photos"};
List list1 = new List("photo list", List.EXCLUSIVE, mayArray, null);
public void startApp() {
desplay = Display.getDisplay(this);
// desplay.setCurrent(form0);
form1.setCommandListener(this);
form1.addCommand(cmdback);
desplay.setCurrent(list1);
list1.setCommandListener(this);
list1.addCommand(cmdexit);
list1.addCommand(cmdshow);
form1.addCommand(cmdnext);
form3.addCommand(cmdback);
form3.addCommand(cmdnext);
form3.setCommandListener(this);
}

public void pauseApp() {
}

public void destroyApp(boolean unconditional) {
}

public void commandAction(Command c, Displayable d) {
if (( d == list1) && c == cmdexit) {
destroyApp(false);
notifyDestroyed();

}
if (d == list1 && c == cmdshow) {
z = 1;
String str = list1.getString(list1.getSelectedIndex());
if (str .equals("natur photos") ) {
desplay.setCurrent(form1);
try {
Image img = Image.createImage("/Natur/photo0.jpg");
form1.deleteAll();
form1.append(img);
} catch (java.io.IOException e) {
Alert alert = new Alert("Error: Load Image");
alert.setString(e.getMessage());
desplay.setCurrent(alert);
}
} else if (str.equals("friends photos") ) {
desplay.setCurrent(form3);
try {
Image img = Image.createImage("/Friend/0.jpg");
form3.deleteAll();
form3.append(img);
} catch (java.io.IOException e) {
Alert alert = new Alert("Error: Load Image");
alert.setString(e.getMessage());
desplay.setCurrent(alert);
}
}
}
if (d == form1) {
if (c == cmdback) {
desplay.setCurrent(list1);
z = 1;
}


if (c == cmdnext) {
form1.deleteAll();
try {
Image img2 = Image.createImage("/Natur/photo" + z + ".jpg");
form1.append(img2);
} catch (java.io.IOException e) {
Alert alert = new Alert("Error: Load Image");
alert.setString(e.getMessage());
desplay.setCurrent(alert);
}
z++;
if (z == 43) {
z = 1;
}
}
}
if (d == form3) {
if (c == cmdback) {
desplay.setCurrent(list1);
y = 1;
}
if (c == cmdnext) {
form3.deleteAll();
try {
Image img3 = Image.createImage("/Friend/" + y + ".jpg");
form3.append(img3);
} catch (java.io.IOException e) {
Alert alert = new Alert("Error: Load Image");
alert.setString(e.getMessage());
desplay.setCurrent(alert);
}
y++;
if (y == 15) {
y = 1;
}
}
}
}//commandAction end
}//class end