Global Variable: It is a variable that is generated outside a module. This global variable can be accessed from anywhere within a program . Scope of a global variable: Scope is nothing but the accessibility of a variable. A variable is visible to the statements present in the variable’s scope. It is possible to access the global variable outside the module and also by other modules.

Question

Add a timer in the following code. public class GameGUI extends JPanel { private final Labyrinth labyrinth; private final Player player; private final Dragon dragon; private Timer timer; private long elapsedTime; public GameGUI(Labyrinth labyrinth, Player player, Dragon dragon) { this.labyrinth = labyrinth; this.player = player; this.dragon = dragon; String playerName = JOptionPane.showInputDialog("Enter your name:"); player.setName(playerName); elapsedTime = 0; timer = new Timer(1000, e -> { elapsedTime++; repaint(); }); timer.start(); } @Override protected void paintComponent(Graphics g) { super.paintComponent(g); int cellSize = Math.min(getWidth() / labyrinth.getSize(), getHeight() / labyrinth.getSize());}

Answer 1

Question

Chapter 3, Problem 7SA

Program Plan Intro

Global Variable:

It is a variable that is generated outside a module.

This global variable can be accessed from anywhere within a program.

Scope of a global variable:

Scope is nothing but the accessibility of a variable. A variable is visible to the statements present in the variable’s scope.

It is possible to access the global variable outside the module and also by other modules.

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Add a timer in the following code. public class GameGUI extends JPanel { private final Labyrinth labyrinth; private final Player player; private final Dragon dragon; private Timer timer; private long elapsedTime; public GameGUI(Labyrinth labyrinth, Player player, Dragon dragon) { this.labyrinth = labyrinth; this.player = player; this.dragon = dragon; String playerName = JOptionPane.showInputDialog("Enter your name:"); player.setName(playerName); elapsedTime = 0; timer = new Timer(1000, e -> { elapsedTime++; repaint(); }); timer.start(); } @Override protected void paintComponent(Graphics g) { super.paintComponent(g); int cellSize = Math.min(getWidth() / labyrinth.getSize(), getHeight() / labyrinth.getSize());}

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