Andi Sunyoto Personal Blog

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
 
public class MIDTextBox extends MIDlet implements CommandListener {
 
    private Display display;
    private TextBox txt;
    private Form form;
    private Alert alert;
    private Command cmdExit;
    private Command cmdSetText;
    private Command cmdInsertText;
    private Command cmdClearText;
    private Command cmdInfoText;
    private Command cmdBack;
 
    public MIDTextBox() {
        display = Display.getDisplay(this);
        txt = new TextBox("Contoh Midlet TextBox", null, 256, TextField.ANY);
        cmdExit = new Command("Exit", Command.EXIT, 1);
        cmdSetText = new Command("Set Text", Command.SCREEN, 2);
        cmdInsertText = new Command("Insert", Command.SCREEN, 2);
        cmdInfoText = new Command("Info Text", Command.SCREEN, 2);
        cmdBack = new Command("Back", Command.BACK, 2);
 
        txt.addCommand(cmdExit);
        txt.addCommand(cmdSetText);
        txt.addCommand(cmdInsertText);
        txt.addCommand(cmdInfoText);
        txt.setCommandListener(this);
    }
 
    public void startApp() {
        display.setCurrent(txt);
    }
 
    public void pauseApp() {
    }
 
    public void destroyApp(boolean unconditional) {
    }
 
    public void commandAction(Command c, Displayable d) {
        if (c == cmdExit) {
            destroyApp(true);
            notifyDestroyed();
        } else if (c == cmdSetText) {
            txt.setString("Contoh Mengeset Text dalam TextBox");
        } else if (c == cmdInsertText) {
            txt.insert("Text Sisipan", 0);
        } else if (c == cmdClearText) {
            if (txt.size() > 0) {
                txt.delete(0, txt.size());
            }
        } else if (c == cmdInfoText) {
            form = new Form("Informasi Text");
            form.append("Teks Aktif: " + txt.getString() + "\n");
            form.append("Jumlah Karakter: " + txt.size() + "\n");
            form.append("Posisi cursor: " + txt.getCaretPosition());
 
            form.addCommand(cmdBack);
            form.setCommandListener(this);
            display.setCurrent(form);
        } else if (c == cmdBack) {
            display.setCurrent(txt);
        }
    }
}