import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.layout.StackPane; import javafx.stage.Stage;

Navigate to the JAR file location and run your game using the following command:

Modify the GameWindow class to integrate your game logic:

// Update game state here System.out.println("Game updated at " + currentTime); } }

primaryStage.show(); }

import javafx.animation.AnimationTimer;

For this example, we'll use JavaFX, a popular and versatile library for building GUI applications, including games. If you're using a different library, the steps may vary.