Codename One Stopwatch App - Codename-one Typing CST Test

Codename One Stopwatch App — Codename-one Code

Implements a simple stopwatch with start, stop, and reset using Codename One Timer.

import com.codename1.ui.*;
import com.codename1.ui.layouts.FlowLayout;

public class StopwatchApp extends Form {
	private int seconds = 0;
	private Label timeLabel;
	private com.codename1.ui.util.UITimer timer;

	public StopwatchApp() {
		setTitle("Stopwatch");
		setLayout(new FlowLayout(Component.CENTER));

		timeLabel = new Label("00:00");
		Button start = new Button("Start");
		Button stop = new Button("Stop");
		Button reset = new Button("Reset");

		timer = new com.codename1.ui.util.UITimer(() -> {
		seconds++;
		timeLabel.setText(String.format("%02d:%02d", seconds / 60, seconds % 60));
		revalidate();
		});

		start.addActionListener(e -> timer.schedule(1000, true, this));
		stop.addActionListener(e -> timer.cancel());
		reset.addActionListener(e -> { seconds = 0; timeLabel.setText("00:00"); });

		addAll(timeLabel, start, stop, reset);
	}
}

Codename-one Language Guide

Codename One is a cross-platform mobile development framework that allows developers to build native mobile apps for iOS, Android, Windows, macOS, and web using Java or Kotlin. It provides a single codebase with a rich set of UI components and native device access.

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