Get value from TextField : TextBox « J2ME « Java Tutorial

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Java Tutorial » J2ME » TextBox 
31. 5. 11. Get value from TextField
Get value from TextField
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.TextField;
import javax.microedition.midlet.MIDlet;

public class J2METextFieldCapture extends MIDlet implements CommandListener {
  private Display display;

  private Form form new Form("Sign In Please");

  private Command submit = new Command("Submit", Command.SCREEN, 1);

  private Command exit = new Command("Exit", Command.EXIT, 1);

  private TextField textfield = new TextField("First Name:"""30, TextField.ANY);

  public J2METextFieldCapture() {
    display = Display.getDisplay(this);
    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.setString("Hello, " + textfield.getString());
      form.removeCommand(submit);
    else if (command == exit) {
      destroyApp(false);
      notifyDestroyed();
    }
  }
}
31. 5. TextBox
31. 5. 1. Add TextBox to a formAdd TextBox to a form
31. 5. 2. TextBox which accepts any inputTextBox which accepts any input
31. 5. 3. Phonenumber TextFieldPhonenumber TextField
31. 5. 4. Numeric TextFieldNumeric TextField
31. 5. 5. TextField.PASSWORD | TextField.NUMERIC)TextField.PASSWORD | TextField.NUMERIC)
31. 5. 6. TextField.PASSWORDTextField.PASSWORD
31. 5. 7. Check the input value of a password fieldCheck the input value of a password field
31. 5. 8. TextBox with size
31. 5. 9. Text AnchorText Anchor
31. 5. 10. Display text in TextBoxDisplay text in TextBox
31. 5. 11. Get value from TextFieldGet value from TextField
31. 5. 12. Remove command from TextBoxRemove command from TextBox
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