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Set_Type_Game.java

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+import java.awt.*;
+import java.util.concurrent.TimeUnit;
+import javax.swing.*;
+
+public class Set_Type_Game extends JFrame implements ActionListener {
+
+    public enum GameType{
+        HARD, MEDIUM, EASY
+    }
+
+    public GameType gt; 
+
+    public Set_Type_Game(){
+        setSize(500,500);
+		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+		setTitle("Difficulty Choice");
+		setLayout(new BorderLayout());
+
+		JPanel button_panel = new JPanel();
+		button_panel.setLayout(new  GridLayout(3,1));
+		button_panel.setBackground(Color.BLACK);
+
+		JButton easy = new JButton("EASY");
+		JButton medium = new JButton("MEDIUM");
+		JButton hard = new JButton("HARD");
+
+        easy.addActionListener(this);
+		medium.addActionListener(this);
+		hard.addActionListener(this);
+
+		easy.setBackground(Color.DARK_GRAY);
+		medium.setBackground(Color.DARK_GRAY);
+		hard.setBackground(Color.DARK_GRAY);
+
+		easy.setForeground(Color.GREEN);
+		medium.setForeground(Color.YELLOW);
+		hard.setForeground(Color.red);
+
+		easy.setFont(new Font("Times New Roman", Font.BOLD, 40));
+		medium.setFont(new Font("Times New Roman", Font.BOLD, 40));
+		hard.setFont(new Font("Times New Roman", Font.BOLD, 40));
+
+        button_panel.add(easy);
+		button_panel.add(medium);
+		button_panel.add(hard);
+
+		add(button_panel, BorderLayout.CENTER);
+
+		setVisible(true);
+
+    }
+
+    public void actionPerformed(ActionEvent e) {
+		String action_command = e.getActionCommand();
+		switch(action_command){
+			case "EASY":
+				gt = GameType.EASY;
+				break;
+			case "MEDIUM":
+				gt = GameType.MEDIUM;
+				break;
+			case "HARD":
+				gt = GameType.HARD;
+				break;
+		}
+	}
+
+}