gameexplorer: added navigation panel + refactoring

src/main/java/de/tims/gameexplorer/GameExplorer.java

@@ -7,6 +7,7 @@ public class GameExplorer {
 	
 	private JFrame frame;
 	private JPanel explorerPanel;
+	private JPanel navigationPanel;
 	private JPanel border1;
 	private JPanel border2;
 	private JPanel border3;
@@ -16,6 +17,8 @@ public class GameExplorer {
 	private JButton fourwinsBtn;
 	private JButton tictactoeBtn;
 	private JButton leaderboardBtn;
+	private JButton backBtn;
+	private JLabel chosenGame;
 	private Dimension minSize;
 	private Dimension btnSize;
 	private GridBagConstraints gbc;
@@ -27,6 +30,19 @@ public class GameExplorer {
 		btnSize = new Dimension(160, 40);
 		gbc = new GridBagConstraints();
 		
+		buildExplorerPanel();
+		buildNavigationPanel();
+		
+		frame.add(explorerPanel);
+		
+		frame.setMinimumSize(minSize);
+		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+		frame.setSize(640, 480);
+		frame.setResizable(true);
+		frame.setVisible(true);
+	}
+	
+	private void buildExplorerPanel() {
 		explorerPanel = new JPanel();
 		explorerPanel.setLayout(new GridBagLayout());
 		
@@ -94,14 +110,17 @@ public class GameExplorer {
 		gbc.gridy = 8;
 		gbc.weighty = 0.2;
 		explorerPanel.add(border5, gbc);
+	}
+	
+	private void buildNavigationPanel() {
+		navigationPanel = new JPanel();
 		
-		frame.add(explorerPanel);
+		backBtn = new JButton("< Zurück");
 		
-		frame.setMinimumSize(minSize);
-		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
-		frame.setSize(640, 480);
-		frame.setResizable(true);
-		frame.setVisible(true);
+		chosenGame = new JLabel();
+		
+		navigationPanel.add(backBtn);
+		navigationPanel.add(chosenGame);
 	}
 	
 	public static void main(String[] args) {