Java Programing laungage

J2ME Projects

J2ME Project 1

Creating a J2ME Application for add Drop DownList into Form
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DropDownList Program


/*
 * Save as a addDropDownList.java
 */
package r4r.Mobile.Basic;

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

/**
 * @author R4R
 */
public class addDropDownList extends MIDlet implements CommandListener {

    /* -- private field -- */
    private Display display;
    private Form form;
    private String[] stringElement = {"Item 1", "Item 2", "Item 3", "Item 4", "Item 5"};
    private ChoiceGroup group;
    private Command exit, select;

    public addDropDownList() {
        display = Display.getDisplay(this);
        form = new Form("Add DropDown List into Form");
        group = new ChoiceGroup("Select Choice", Choice.POPUP, stringElement, null);
        select = new Command("SELECT", Command.OK, 1);
        exit = new Command("EXIT", Command.EXIT, 1);
        
        // Add Field into Form  
        form.append(group);
        form.addCommand(select);
        form.addCommand(exit);
        form.setCommandListener(this);
    }

    public void startApp() {
        display.setCurrent(form);
    }

    public void pauseApp() {
    }

    public void destroyApp(boolean unconditional) {
    }

    public void commandAction(Command c, Displayable d) {
        if (c == exit) {
            destroyApp(true);
            notifyDestroyed();
        } else if (c == select) {
            // Display selected Choices from List
            StringItem item = new StringItem("Selected Choices = "
 group.getString(group.getSelectedIndex()));
            form.append(item);
            display.setCurrent(d);
        }
    }
}

 

output
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