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How to hide text in a TextField |
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This example shows how to hide text in a TextField.
This is useful when the user enters his/her password.
/*
J2ME: The Complete Reference
James Keogh
Publisher: McGraw-Hill
ISBN 0072227109
*/
//jad file (please verify the jar size)
/*
MIDlet-Name: HideText
MIDlet-Version: 1.0
MIDlet-Vendor: MyCompany
MIDlet-Jar-URL: HideText.jar
MIDlet-1: HideText, , HideText
MicroEdition-Configuration: CLDC-1.0
MicroEdition-Profile: MIDP-1.0
MIDlet-JAR-SIZE: 100
*/
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class HideText extends MIDlet implements CommandListener
{
private Display display;
private Form form;
private Command submit;
private Command exit;
private TextField textfield;
public HideText()
{
display = Display.getDisplay(this);
submit = new Command("Submit", Command.SCREEN, 1);
exit = new Command("Exit", Command.EXIT, 1);
textfield = new TextField("Password:", "", 30, TextField.ANY | TextField.PASSWORD);
form = new Form("Enter Password");
form.addCommand(exit);
form.addCommand(submit);
form.append(textfield);
form.setCommandListener(this);
}
public void startApp()
{
display.setCurrent(form);
}
public void pauseApp()
{
}
public void destroyApp(boolean unconditional)
{
}
public void commandAction(Command command, Displayable displayable)
{
if (command == submit)
{
textfield.setConstraints(TextField.ANY);
textfield.setString("Thank you.");
form.removeCommand(submit);
}
else if (command == exit)
{
destroyApp(false);
notifyDestroyed();
}
}
}
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